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User`s Manual

1. 62 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 9 Acronyms and Definitions APSS Array Power Supply Subsystem BGR Background Reset Array operation DV Data Viewer also know as Image Monitor FITS Flexible Image Transport System GUI Graphical User Interface JBox Mechanism Junction Box part of the mechanism control subsystem IC Instrument Control MKIR Mauna Kea Infrared NAC New Array Camera NDR Non Destructive Read UBox Mechanism Utility Box part of the mechanism control subsystem 63 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE Appendix A Filter Physical Specifications TODO DT Update the physical specifications These are from NICI The filter wheel contains 2 square and 1 round filters NSO may change the filters initially installed in the filter wheel This section provides the physical specifications of the filters 2 Square Filter Physical Specifications Thickness lt 5 0 mm 0 25 mm Width 50 8 mm 0 1 mm Bevel standard 1 Round Filter Physical Specifications Thickness lt 5 0 mm 0 25 mm Diameter 50 8 mm 0 1 mm Bevel standard 64
2. CoAdd Buffer selection DESTBUF bufsel Full Array Subarray selection e Full Array Displays the size of the full array 1024 x 1024 e Full Array Subarray selection ARRAYMODE full sub e Subarray Permits setting the size of the subarray ARRAY x y wid hgt Autosave e Enable Disable Autosave AUTOSAVE on off e Set FITS filename FITSFILENAME name e Set FITS file storage path SAVEPATH path e Set starting number for FITS image number FITSFILENUMBER num Figure 16 Screen Capture Array Control GUI Observation Tab 38 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE X A Redstar3 User Interface version 0 70 Status Client to IC Not Connected wer Not Connected t Clocker Not Connected Working tat Pixel Not Connected Expected Time 1 ge None Basie a O Integration Time 110 000025 Camera Array is Pedestal Time 0 ms 1024X1024 Coadd Count D Cycles NDR Count H Coadd Buffer Autosave On Filename atest Remote Storage Yhome data GR E Ja Command f T 39 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 6 1 3 Setup Tab The Setup Tab provides the functionality listed below Command line equivalents are listed in the parentheses A screen capture of the Setup Tab is provided in6 1 3 Image Monitor DV Data Viewer TODO Verify these commands from N
3. Set the integration parameters to 2 times initial integration time Take and save flat science images in both channels OO Oo OF E Cam 5 2 3 Sky Flats TODO This procedure is an example from the NICI instrument It should be replaced with NAC instructions or deleted Pause the AO system Offset the telescope to a sky position Set the integration time to XXX seconds and 10 co adds TODO Need to determine XXX Set the FITS comment field to Sky Flat Take and save sky frames Verify that no stars are present in the sky field with the quick look display Dither position and repeat 4 times NOOR WON gt 32 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 5 3 Science Observations Modes and Scenarios The procedures for science observations will vary with the type of observing project being conducted This section is meant to provide direction for several common observational scenarios Specific instructions are provided for the following observing scenarios Explain TTL synchronized start How to do a single read How to do a Correlated Double Sampling Read Coaddition both traditional and Rabin How to do NDRs How to do streaming Remote Operation Stand alone operation Astrometry What other modes and scenarios are relevant to NAC How s this list 5 3 1 General Use Scenario To make an observation at least the steps described here must be executed First a qualitative description
4. off 6 5 3 DV1Hostname Set Hostname for Data Viewer 1 DV1Hostname Sets the hostname parameter for the machine that the instance of DV indicated by DV1 is running on e Parameters hn Range hn A text string hn is the hostname that DV is running on e e Initial Values At start up hn is set to e Syntax DV1HOSTNAME hn 6 5 4 DV2Hostname Set Hostname for Data Viewer 2 DV2Hostname Sets the hostname parameter for the machine that the instance of DV indicated by DV2 is running on e Parameters hn Range hn A text string hn is the hostname that DV is running on e e Initial Values At start up hn is set to e Syntax DV2HOSTNAME hn 6 5 5 DV1Port Set the Port Number for Data Viewer 1 DV1Port Sets the port number parameter for the machine that the instance of DV indicated by DV1 is listening on e Parameters pn e Range pn A valid port number the port number on which DV1 is listening 58 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE e Initial Values At start up pn is set to 30123 e Syntax DV1PORTNUM pn 59 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 6 5 6 DV2Port Set the Port Number for Data Viewer 2 DV2Port Sets the port number parameter for the machine that the instance of DV indicated by DV2 is listening on e Parameters pn e Range pn A valid port number the port number on which DV2 is lis
5. Charles is updating the implemented commands which have all changed NAC was designed first and foremost as an instrument to do high speed polarimetry The purpose of this section is to highlight aspects of NAC that should be considered by observers when planning to use NAC for their observations These aspects will be primarily discussed as concepts not giving specific commands Specific operational procedures and commands are provided in Sections 5 and 6 TODO DT Rewrite this section This information is an example from the NICI instrument Since NICI has very small pixels the integration times will not be very short At shorter wavelengths integration times will be on the order of 1 to 2 minutes In the thermal wavelengths the integration times will be more on the order of 1 to 2 Hz Since very fast integrations are not required there are not very many options that must be adjusted in the array controller The issues that an observer needs to be concerned with are listed below 4 1 Basic Image Acquisition Concepts This section describes some basic concepts related to image acquisition 4 1 1 Resets During times in which images are not being acquired light may still be falling on the array The resulting accumulation of electrons in the wells of the array will overexpose the image and may aberrations in subsequent images The Array Controller will flush these extra electrons at continual and specific times This is called a background rese
6. There are 16 signals that are used in this Redstar3 implementation for controlling the Aladdin III array The term used to describe these signals is clock although some of the signals may be constant voltages It is by manipulating these clock signals that images are captured from the array The specific sequence of manipulating these clocks for array control is called a clocking pattern Clocking pattern generation is accomplished by a combination of software and hardware Instrument Control Software generates a specific clocking pattern for each observation based on the configuration parameters set by the user This clocking pattern called a Superpattern is sent to the hardware Clocker in the Array Control Electronics which executes the pattern on the array The NSO Array Controller is shipped with built in carefully optimized clocking patterns It is recommended that observers use the patterns that shipped with the array controller If the customer wishes to modify the clocking patterns extreme care must be taken as the arrays are very sensitive devices Improper clocking patterns can result in unpredictable array behavior or cause damage to the arrays The following discussion describes how to generate array clocking patterns 4 2 1 Clocking Pattern Building Blocks pFiles and patFiles For modular and flexible control over array operation the NSO Array Controller utilizes a suite of basic pattern building blocks to build the Superpatter
7. command is password protected Disabling BGRs can damage the array and will likely lead to image distortions See the Operator s Manual for the engineering password command 6 4 6 BgrMs Set the BGR MS Parameter BgrMs Sets the BGR MS parameter See Section 4 1 1 for an explanation of BGRs e Parameters time e Range time The BGR MS time in milliseconds e Initial Values On initial start up time is 10 milliseconds e Syntax BGRMS time This command is password protected See the Operator s Manual for the engineering password command 6 4 7 BgrMinMs Set the BGR Min MS Parameter BgrMinMs Sets the BGR Min MS parameter See Section 4 1 1 for an explanation of BGRs e Parameters time e Range time The BGR Min MS time in milliseconds e Initial Values On initial start up time is 10 milliseconds e Syntax BGRMINMS time This command is password protected See the Operator s Manual for the engineering password command 6 4 8 BgrNs Set the BGR NS Parameter BgrNs Sets the BGR NS parameter See Section 4 1 1 for an explanation of BGRs e Parameters time e Range time The BGR NS time in nanoseconds e Initial Values On initial start up time is 10 nanosecs e Syntax BGRNS time This command is password protected See the Operator s Manual for the engineering password command 6 4 9 CamMode Set Basic Streaming Camera Mode CamMode Specifies the operation mode of the system e Parameters
8. directories home nso redstar3 solar fastpatterns home nso redstar3 solar slowpatterns TODO MT Verify the location of these patterns 23 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 4 2 1 1 De Format Each pFile contains a command oriented description of a clocking pattern Each line in a pFile contains one command The commands provide a method for describing a clocking pattern Care must be taken to assert and de assert all of the clock signals at the appropriate times Once a clock signal is set it remains set until it is explicitly cleared 4 2 1 1 provides a list of the commands that can be used in pFiles Bit definitions of the mask are defined in Section 4 2 1 3 A p extension is used with pFiles The commands in pFiles are compiled into patFiles by the cpat utility See Section 4 2 1 4 for an explanation of the cpat utility BCLEAR lt mask gt Turn off the specified bits in the mask Defines a 16 bit hexadecimal mask lt mask gt is a text string that will represent the 16 bit hex mask lt value gt BDEF lt mask gt lt value gt BSET lt mask gt Turn on the specified bits in the mask DESC lt text gt Description text for the pattern in the pFile OUTFILE lt filename gt Sets the output file name PROCESS lt filename gt Execute the commands in file lt filename gt RESET Resets all internal variables to startup condition This is not an array res
9. the Array Control GUI This section describes the commands and GUI functionality that are available for controlling NAC The GUI provides access to all of NAC s functionality through an X windows based interface All of NAC s functionality can also be controlled via textual commands The text commands are partitioned into System Setup Commands System Commands General Setup and Configuration Commands and Data Viewer Commands TODO MT This entire section is copied from the Software Array Control document v0 2 dated 5 29 03 Apparently these commands have been changed by Charles since then Update this whole section to reflect the changes Section 6 1 provides a description of the Array Control GUI Section 6 2 provides descriptions of System Setup Commands which permit configuration of host names and port numbers This section will be most relevant for telescope operators making configuration changes to the instrument Section 6 3 gives descriptions of System Commands for initializing connections between IC components and for starting and stopping image acquisition These commands may be used by observers in every observation Section 6 4 defines General Setup and Configuration Commands that are used for setting up the specifics of a particular image capture Readout operations array configuration and FITS headers are configured with the commands defined in this section This section should be reviewed by all observers Section 6 5 prov
10. the specified function Toggle No Toggle Commands with the Toggle No Toggle option permits control over the change of state to phiS1 array clock When toggled the array s row register counter is advanced When not toggled the counter register is not advanced permitting a double sampling of the row TODO Verify this list of included pFiles global_reset p Performs a reset on the array integration p Initiates an integration p1 p Frame Start with Global Reset p2an p Jump from row A to row B with no toggle of phiS1 p2at p Jump from row A to row B toggle phiS1 p2bn p Jump from row B to row C with no toggle of phiS1 p2cn p Jump from row C to row D with no toggle of phiS1 p2ct p Jump from row C to row D toggle phiS1 p2dn p Jump from row D to row A with no toggle of phiS1 p3af p Clock out first 16 pixels of row A assumed to be current row p3al p Clock out last 16 pixels of row A assumed to be current row p3am p Clock out middle 16 pixels of row B from current position assumed to be current row p3as p Skip 16 pixels of row A from current position assumed to be current row p3bf p Clock out first 16 pixels of row B assumed to be current row p3bl p Clock out last 16 pixels of row B assumed to be current row p3bm p Clock out middle 16 pixels of row B from current position assumed to be current row p3bs p Skip 16 pixels of row B from current positio
11. Controller User s Manual Rev 0 13 PRERELEASE Table of Contents Wl dee HL OM D 8 tIRelated Ree 8 ZOCIENCE Descriptio Naer ane paar eaa aaaea E aaaea aa e aE aaas eii 9 2 1High Speed Polarimetry AAA 9 RAN ln EE 9 2 SREISLENCES sacs araa aAa E AE PASTAA EE A ENE A EES AARE egen EAR e g 2 4Science Channel Performance 10 SINSTFUMENE Descriptio Nsitini aandaa 11 3 1 Instrumental Gpechhicatons AA 13 3 1 1FPA Mount Specifications cccecceceeceeeeeceeeeceeeeeeeeaeeeeeaaeeeeeeeeeeeaaeeeeecaaaeeseaeeeegeeeeeeseaeesseaeeeneenees 13 3 1 2FPA Control Specifications AA 13 3 1 3Communication and User Interface Specifications ccccecceeeeceeeeeeeeeeeeeeeeeeeaeeeeeeeeeeesaeeessaeeeteaes 13 3 1 4Data Acquisition and Storage Gpecicaiions cease eeeeeeeeeeaeeeseaeeeeeeeeeeenenaeees 13 B 2INStrUMENt OVErVICW nl 3 2 1Optics and Light Path Description 14 3 2 2Filter Wheel Description cesor aeaa eE aa AAN EE E AA A aae 15 3 2 3Detector Propero TTT 15 3 2 4Coordinate System Description 16 3 2 5ElSCtronics DOESN PUON EEN 17 3 2 5 1Instrument Control Electronics ccceececceeeeeeneee ee eeeee eee aaeeeeceeeeeeceeeeeeceaaeeeeseaaeesecaaeesseneeeeenaeees 17 Almportant Aspects of Operation c cceeeeeeeeeeeeeeeseeceneeeeeeeeeeeeeeeeeeeeeseaeeeeeeeeeeeeeeeeseenees 19 4 1Basic Image Acquisition CONCE DUS saa cis secceseciecchedssteeescdi yssaeeees cht EENEG EENS ches a aa as aaa E eTA 19 Be 4 1 2Noise Reduction with Pe
12. ICI Are there still two e Enable Disable DV DV1ENABLE on off DV2ENABLE on off e Set Data Viewer Hostname DV1HOSTNAME hn DV2HOSTNAME hn e Set DV Port DV1PORTNUM pn DV2PORTNUM pn Exposure Mode e Select Exposure Mode drop down box ARCMODE arc_s arc_d e Timing Gain explain Is it part of exposure mode Command line equivalent e Timing Offset Explain Is it part of exposure mode Command line equivalent Timestamping Enable Disable Checkbox TIMESTAMPENABLE on off TODO This is not a requirement Is it still in the GUI Serial Communication Enable Disable Checkbox SERIALENABLE on off Enables IC Software serial communication with the serial portserver Client to IC Not Connected erver Not Connected tat Clocker Not Connected Working t Pixel Not Connected i Expected Time IC to Digiport Not Connected System Message None localhost DYI Port 30123 Enable DV2 DY2 Hostname localhost DY2 Port 30123 Exposure Mode ARC_D Timing Gain DI Timing Offset 10 S Enable Timestamping E Enable Serial Comm Command 40 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 6 1 4 Engineering Tab The Engineering Tab provides password protected control over some critical Array Controller functions listed below Command line equivalents are listed in the parentheses A screen capture of the Engine
13. Initial Values At start up the pn1 is set to 2001 and pn2 is set to 2002 e Syntax DIGIPORTNUM pn1 pn2 6 3 System Commands The System Commands set up connections from the IC Software to its clients and starts and stops image acquisition This section specifies the System Commands 6 3 1 Connect Connect IC to Clients Connect Tells the IC software to start up and connect the system e Parameters None e Range None e Initial Values At start up the IC software is running and awaiting client connections but is not connected to other system components Clocker Pixel PixelServer Serial Ports e Syntax CONNECT 6 3 2 Go Start Image Acquisition Go Starts the system operation and image acquisition based on current parameters Parameters None Range None Initial Values None Syntax GO 6 3 3 Stop Stop Image Acquisition Stop Stops any image acquisition in progress Graceful stop or immediate abort e Parameters None Range None Initial Values None Syntax STOP 49 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 6 4 General Setup and Configuration Commands The General Setup and Configuration Commands provide the methods for setting up the Array Controller for acquisitions These commands prepare the Array Controller for an acquisition and should be used before the Go command is executed This section specifies the General Setu
14. KEuE EE aiana enian na maeka aani iaaa aiai akasaini 62 8 1Electronics Troublesbootmg A 62 E Reuler le ET 62 8 2 1 PHOtTOEMISSIVE DIE KEE EAA AEE A A E EA A AAA E E E E 62 8 3Temperature TrOUDICSNOOTING A 62 8 4VacuUM Troubleshootmng cece eeente eee e eE E EE TEE EE 62 SACFONYMS ANG Definitions rere ereere ioneina aeaee eath eiden riae naiaiae naaa aaia Eea taaan 63 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE Table of Figures and Photos Figure 1Functional Block Diagram of the NAC Instrumentt cccccceeeeeeeeeeeeeeeeeeeeees 11 FIGUre ZNAG Optical Dtegrer hees 14 Figure 3NAC Optical Distances Diagranm ccccsssseecceseseeeeeeeeseeeeeeeeeeseneeeeeeeeseeeeeeeeess 15 Figure 4Population of the Filter Wheell cccccesssseeeeeeeeeeeeeeeeeneseneeeeeseeeeseseeseeeeeeeeeeeeeees 15 Figure 5Table of NAC Detector Properties ccccccssseeeeeeeeeeeeseeeeeeeeeeeeeeseseeeeeeeeeeeeeneeenes 16 Figure 6Block Diagram of Major NAC Compone nt 0 ccceseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeees 17 Figure 7Block Diagram of Instrument Control EleCtronics cccccccssessseeeeeeeeeenenseneees 18 Figure 8Background Reset Timing Diagranm ccceeeeeeeeee eee e eee eeeeeeeeeeeeeeeeeenenenennenees 19 Figure 9lllustration of Correlated Double Sampling s Pedestal and Signal Frames 20 Figure 10lllustration of a Single REACL csceeceeeeeeeeeeeeeeeeeeeeeeeeeneeseeeeeeeeeeeeeeeeeeeee
15. Maveaade een dette as net dk eniiw Dee aari daea iaa ibe 34 533 GNDR Procedure ic 20 ieaiai AE EAE E ENEE eee eee EE eae NE ee een eee E 34 5 3 7Streaming Image Capture Procedure nnen nnno 34 5 3 8BRemote EE e EE 34 5 3 9Standalone Operation ic ug nnii eieiei ect dei eesti lait AEN 34 e Fl ROY tte 101 EE 34 5 3 10 1Methods to get the Centroid of the Prima 34 5 ANIght time SAULAOW EE 35 5 5Preliminary Data Reduction asiaa raria inina ea KEAN AEN eee K ANE AAA SEE AE ENEE 35 5 5 1Mapping of Arrays to Each Other 35 5 5 2Sky Subtraction and Dark Current Gubtractlon 35 EE WE Se Le DEE 35 20 Frame Differ MCU Ges TEE 35 6Array Control Commands and the Array Control GUL cccccscssseeeeeeeeeeseeeeeeeeeeneeeeeees 36 GslArray Control GW EE 37 6 COMMON e Ten IN 37 6 1 20bs6rvation Tab tiisin cabvaasZectacensdedzes acce EENS EE Aa AEN 38 TEE ite oe eer ee ee ee 40 GOL 4ENGINGS ring Taree E E E E E I E E 41 Ge e Ee EE ee EE Ea GE 44 6 1 7F UTS Header Tabs TTT 6 2System Setup Commande titte tst ttssstnnsttn ttnt rtassttnnStn nA tnnnasttnnSeEnnnnnnnnnnanssennnennnnnn neat 47 6 2 1PsrvHostname Set Pixel Server Hostname 47 6 2 2PsrvPortNum Set Pixel Server Port Number 47 6 2 3ClockerHostname Set Clocker Hoetmame nnn 47 6 2 4ClockerPortNum Set Clocker Port Number 47 6 2 5PixelHostname Set Pixel Software Host 47 6 2 6PixelPortNum Set Pixel Software Port Number 47 6 2 7DigiHostname Set DigiPort Hostname ce
16. NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE NATIONAL SOLAR OBSERVATORY NEW ARRAY CAMERA NAC AN INFRARED ARRAY CONTROLLER AND DATA ACQUISITION SYSTEM USER S MANUAL REVISION 0 13 3 10 05 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE Prepared by Mauna Kea Infrared LLC NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE Revision History n 0 13 Mike Corrected 5s exposure time instrumental feature Changed 3 10 05 Thompson engineering password references to Operator s Manual Added general use scenario section 0 12 Mike Added requirements list Added coordinate description Added 2 24 05 Thompson filter wheel description Added optics description Made clarifications to clocking patterns Added single and CDS read descriptions Did a general cleanup Expanded Double Sampling description and added diagram This version contains unresolved issues and questions DT issues marked with TODO DT 0 11 Mike Moving Operator s Manual content out of this User s Manual 2 17 05 Thompson Added some other editing notes that are to do Expanded Instrument Description Changed title page name and layout 0 10 Mike Initial revision mostly a template 2 8 05 Thompson Prepared TOC and Title Page Integrated command set from Software Array Control document Some content may be more relevant in the Operator s Manual per the NAC SOW NSO Infrared Camera
17. PS an Array Power Supply APS and an Ethernet switch These electronics are responsible for array control mechanism control thermal conditioning of the cryostat and image acquisition A block diagram of the IC Electronics is provided in3 2 5 1 The Instrument Control Software running in the Pixel Server is the primary controller for the entire instrument It receives commands from users and orchestrates the actions of the IC Electronics The IC Software drives s serial control over O Infrared gt Controller User s Manual Rev 0 1 The IC Software in the Pixel Server also provides serial control over the Temperature Control subsystem via the internal LAN and terminal server A Lakeshore 332 Temperature Controller is used to maintain the detector temperature and provides information about the health of the cooling system in the cryostat to the IC Server Ext Trig Ar d t cb oeber Paleitiifah iyrfgbliblechanism Grilter Supply iber i Ethernet Position Utility Box Lakeshore _Ext Trig 5V GND P1 Array Cable P2 Array oan ene SS Maint Config Figure Block Diagram of Instrument Control Electronics 18 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 4 Important Aspects of Operation TODO DT Write this section This information is an example from the NICI instrument TODO MT Scan whole document for references to old commands
18. RERELEASE o If off the system will reload the clocking patterns using the slow clocking pattern set to generate images The Slow clocking pattern set has been optimized for minimized noise e Initial Values On start up DoFastMode is off and is using the slow clocking pattern set e Syntax DOFASTMODE on off 6 4 15 EPassword Send Engineering Password EPassword Send the engineering password e Parameters pass e Range pass This is the engineering password it s a text string Once sent and verified the interface has access to engineering functionality such as modifying BGR and Clock Bias Voltage parameters e Initial Value On start up the interface does not have access to engineering restricted functionality e Syntax EPASSWORD pass See the Operator s Manual for the engineering password 6 4 16 FitsComment Set the FITS Comment Header FitsComment Sets the comment header entry for all FITS files created e Parameters comment e Range comment Comment is a text string e Initial Values On start up comment is e Syntax FITSCOMMENT comment 6 4 17 FitsFilename Set FITS Filename FitsFilename Sets the base filename for all FITS files created and stored e Parameters name e Range name The name of a file can be anything but should end with a fit file type extension Filenames are appended with incrementing file numbers which increment internal to the Pixel Server system as it s
19. addin III Detector operating over the 1 5 micron with range with high density sampling at 0 018 TODO DT verify this number arcsec pixel A 6 position filter wheel that provides users a choice of filters in the science channel Low scatter Ghost Free Optics The all reflective optical train is designed to minimize the number of surfaces and eliminate ghosts Closed cycle cryogenic cooling 1 TTL compatible sense line input for synchronizing with external devices The key instrumental features are Fast frame rate 10 Hz minimum Up to 5s exposure time and greater Full array or sub array readouts Single and Correlated Double sampling Did optional Fowler sampling make it 8 frame buffers Image monitor FITS file format support Streaming and co addition modes A functional block diagram of the NAC instrument is provided in3 Image Capture Synchronization Cryostat Camera 11 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 12 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 3 1 Instrumental Specifications This section lists all of the specifications of the NAC instrument and should be useful for readers wishing to gain a quick understanding of the functionality of the instrument These specifications are from the final set of requirements defined the in the Acceptance Checklist in NSO s Redstar3 Array Controller Acceptance Test Plan s 3 1 1 FPA Mount Spec
20. ce cence eeeeeeeeeaeeeeeaeeeeeaaeeeceaaeeeseeeeeseaaeeeeeeeeseaaeeeed 49 6 2 8DigiPortNum Set DigiPort Port Number 49 EE Re ul E 49 6 3 1Connect Connect IC to Clente sees eeeeaaeeeeeaeeeeeeaeeeceaeeeeseeeeesaaeeseceeeesiaaeeseenee 49 6 3 2G0 Start Image ACQUISITION ET 49 6 3 3Stop Stop Image Ac isitioN EE 49 6 4General Setup and Configuration Commande 50 6 4 1ArcMode Set Exposure Mode AAA 50 6 4 2Array Set SUDAN AY SIZE sci feore aa raa a a T aa Deeg beahdvg cued reste aea a aaa anaa 50 6 4 3ArrayMode Set Array Mode Full Gubarrav 50 6 4 4AutoSave Set Save Discard Data 50 6 4 5BgrEnable Background Reset Enable AA 51 6 4 6BgrMs Set the BGR MS Parameter 51 6 4 7BgrMinMs Set the BGR Mim MG Parameier 51 6 4 8BgrNs Set the BGR NS Parameter 51 6 4 9CamMode Set Basic Streaming Camera Mode 51 6 4 10ClkBiasVGGCL Set VGGCL Bias Voltage 53 6 4 11 CIkBiasVDETL Set VDET Bias Voltage nent 53 6 4 12Coadd Set Coadd Counts nk 53 6 4 13Cycles Set Cycle Count E 53 6 4 14DoFastMode Select Fast or Slow Cockimg 53 6 4 15EPassword Send Engineering Password 54 5 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 6 4 16FitsComment Set the FITS Comment Header 54 6 4 1 7FitsFilename Set FITS Hlename anan nii e a a i i a a aia 54 6 4 18FitsFilenumber Set FITS EilehNumber 54 6 4 19ITime Set Integration Time 54 6 4 20NDR Set Non Destructive Read Co
21. cify which clock bits are to be set and clear A Clocking Entry Value is held at the array inputs for the duration specified by the preceding Clocking Entry Duration A pat extension is used with patFiles Here is an example What is the clock period Example patFile Initial condition Hold for 6 ticks 0006 8440 Assert bit 0 Hold for 1 tick 0001 8441 Clear bit 0 Hold for 15 ticks OOOF 8440 4 2 1 3 Bit Definitions Generally the pFile commands provide a way to turn on and off the 16 clock signals So there are 16 bits to be controlled in clocking patterns Each bit is assigned a number from 0 to 15 The following table defines the clocks that correspond to bits in the pFiles and patFiles vggcl vrowon vrstr vrstg read_data convert Frame phiSS vddcl phiS1 phiS2 phiSOE phiDES phiFS phiF 1 PhiF2 CO NN Q AA OINI oO o zech CH ch ch l N as oo A 4 On 25 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE Figure 12 Table of Bit Definitions for Clock Signals 26 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 4 2 1 4 The cpat Utility The cpat utility is a clocking pattern table generator The utility takes as input a command oriented description of a clocking pattern from a pFile The output is an ASCII file containing a clocking pattern table in a patFile The patFiles are
22. comment field to Mask Location Take and save the mask location images with both arrays GCU still on Determine the position of the center of the mask 5 2 Night Time Calibration and Setup TODO DT This text is an example from the NICI instrument It should be replaced with NAC instructions In between science objects and for each setting of filters or dichroics the facility calibration unit will be used to take flat fields These will be used in addition to the sky flats until the optimal field flattening is determined 5 2 1 Twilight Setup TODO DT This procedure is an example from the NICI instrument It should be replaced with NAC instructions or deleted This section describes tasks to be performed just prior to night time The procedure below sets Pupil Mask and Spider Mask allignment centers the guide star on the OIWFS and sets the Spider Mask zero point Domm boah Slew the telescope to a sky position near the science object Position the PWFS probe for the selected guide star Set the instrument rotator at a 0 degree position angle Set the instrument rotator to de rotate the image Set the Spider Mask Rotator to active Select the Pupil Imager mode Set the Channel 2 Blue Filter to L Set integration time to 0 1 second and 1 co add Set the FITS comment field to Spider Mask Take a setup image to check Pupil Mask and Spider Mask alignment Verify that the Spider Mask position covers spiders an
23. d adjust if necessary De select pupil imaging mode Slew to the science object Reacquire stars for the PWFS Set the OIWFS Steering Mirror to the nominal bore sight position as determined in the Daytime AO Setup procedure Set the OIWFS ND Filter for the selected guide star Set the Channel 2 Blue Filter back to the selected science filter Activate the AO system with default parameters Take an image in Channel 1 and send to the DHS for centering analysis Adjust the OIWFS Steering Mirror accordingly Record the OIWFS spatial zero points and set new bore sight position Determine and set optimal AO servo parameters Take an image with Channel 1 to view spider flares sent to Quick Look Adjust the Spider Mask zero point to minimize spider flares Set the new Spider Mask zero point Flats with Facility Calibration Unit 31 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE TODO DT This procedure is an example from the NICI instrument It should be replaced with NAC instructions or deleted This section describes how to acquire flat images with the facility calibration unit Pause the AO system Set the facility calibration unit to black body mode TODO Need to determine parameters Set integration parameters in both channels TODO Need to determine integration time Set the FITS comment field to Flat Select 10 coadds Take and save flat science images in both channels
24. d mode 6 Hz minimum single read no gain or offset correction 12 Hz target single read refresh rate 3 1 4 Data Acquisition and Storage Specifications Support Flexible Image Transport System FITS data format including header parameters comments and image extensions All modes to operate either with or without writing data to disk Streaming mode Record full or sub sampled images on disk as fast as possible 5 image s minimum single read 10 image el target single read Co addition mode Co add 16 bit data into 8 minimum 16 target named user selectable 32 bit buffers 13 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE All modes executable via user written macros 3 2 Instrument Overview NAC is a cryogenic 1 5 m imager implemented with a 1024x1024 Aladdin III array The science channel has a 6 position filter wheel that is initially populated with J H CO 4mic and HE1083 filters NAC will generally be fed light from a spectrograph The camera will be used both directly at the focal plane of solar telescopes and at the exit port of imaging spectrographs Need we include any warnings about flux levels TODO DT Description of the science goals co addition and how the instrument supports the goals 3 2 1 Optics and Light Path Description This section provides an overview of the light path through NAC A diagram of the light path is provided in 3 2 1 Light enters the cryostat through a Ca
25. dates Note that when the user starts the exposure with the GO command the array control electronics are placed into an armed state The hardware then waits for the appropriate TTL Sense Line to be asserted before beginning acquisition 5 3 2 TTL Sense Line Synchronized Start TODO DT 33 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 5 3 3 Single Read Procedure TODO DT 5 3 4 Correlated Double Sample Read Procedure TODO DT 5 3 5 Coaddition Procedure TODO DT 5 3 6 NDR Procedure TODO DT 5 3 7 Streaming Image Capture Procedure TODO DT 5 3 8 Remote Operation TODO DT 5 3 9 Standalone Operation TODO DT 5 3 10 Astrometry TODO DT Write some overview of astrometry with NAC if it s relevant 5 3 10 1 Methods to get the Centroid of the Primary TODO DT This text list is an example from the NICI instrument It should be replaced with NAC specifics or deleted 34 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 5 4 Night time Shutdown TODO DT 5 5 Preliminary Data Reduction TODO DT Write this section What kind of data reduction is relevant for NAC The following sections are from NICI 5 5 1 Mapping of Arrays to Each Other 5 5 2 Sky Subtraction and Dark Current Subtraction 5 5 3 Flat Fielding 5 5 4 Frame Differencing 35 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 6 Array Control Commands and
26. dendum Data Viewer DV Description A description of a tool used for viewing and manipulating images e NAC Software Array Control and Image Acquisition A description of the array control software and GUI for specific array configuration and operation NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 2 Science Description TODO DT Write an introduction Are there any subsections missing 2 1 High Speed Polarimetry TODO DT This description is leveraged from the SOW Is this adequate and relevant Solar spectropolarimetry makes two key instrumental demands high signal to noise and rapid cadence High signal to noise is required because the observed range of polarization is 102to 10 or below Rapid cadence is a related requirement because net polarization is determined by subtracting images in opposite states of polarization e g right and left circular polarization Atmospheric turbulence seeing degrades the difference signal if the two states are obtained sequentially Therefore NAC supports a fast frame rate Additionally NAC provides the ability to co add a number of difference images to achieve the required polarization sensitivity The number of co adds used by observers will depend on the noise in the individual frames and must balance precision against the total time required to scan a useful area of the solar surface A distinctive aspect of spectropolarimetry is the need for multiple co add buffers If a s
27. destal Frames and Correlated Double Gampltmg 20 Ee EE 21 AV AC OAAIVON EE 21 W ele trei ME en dE EA 4 1 6Noise Reduction Reads NDR Heade nnen 21 4 4 7Synchronized Startar dee Det Sege eae ane etd a aaan iaa 21 GAREN EE 21 4 1 9Slow Fast Clocking Patten 22 AS Let Cl 22 4 2Array Clocking Patterns ode eu iid bn teenie eileen EENEG 23 4 2 1Clocking Pattern Building Blocks pFiles and poattiles 23 42 1 1pFile Tu 24 4 2 1 2patFile elt 25 4 2 1 3Bit RTE 25 4 2 14 T hie cpat UMI EE 27 4 2 2pFiles and patFiles Shipped with the NSO Array Controllet c ccccceeceeeeeeeeeeeeeneeeeeeeeeeseeeeeseeeeseas 28 4 3User Programmable Array Bias Vohtages A 29 HODSELVING WITRINAG E NG 30 5 1 Preparation for ObServing cc ste ieee ta aiid itl ated ane a et eee aad et ee eae 30 521 1 Pre Run Planning NEEN ee ENNEN ENEE feet ea dea eae eae een 30 5 1 2Daytime Camera Setup Calibration and Checkout 30 5 2Night Time Calibration and Getup sennae 31 EK le wee EE 31 5 2 2Flats with Facility Calibration Un 31 EE ER 5 3Science Observations Modes and Gcenarios neern nnt 33 5 3 1General Use SCOMari0 cece ceeeececeeeence cence eeeceneeeseaaaeeeaaeeeeaaeeeecaaaeeseaeeeeseaeeeessaaesssgeeeesseaaeeessaeeeseaes 33 5 3 2TTL Sense Line Synchronized Gart 33 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 5 3 3Single Read Proceduren stad acide teal atti aa eine aie 34 5 3 4Correlated Double Sample Read Procedure 34 er CET
28. digi DigiPort SP2 Port A o Working Expected Time 1 PixelServer Port Clocker Port Buffer Port 72002 2000 2000 2000 45 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 6 1 7 FITS Header Tab The FITS Header Tab provides control over what information is inserted into FITS file header for the observation The functions that can be set in the FITS Tab are listed below The command line equivalents are listed in parentheses A screen capture of the FITS Header Tab is provided in6 1 7 FITS Header e Set FITS Object Header Entry FITSOBJECT name e Set FITS Observer Header Entry FITSOBSERVER name e Set FITS Comment Header Entry FITSCOMMENT comment e Set FITS Pos Angle Header Entry Command line equivalent e Set FITS Plate Scale Header Entry Command line equivalent X H Redstar3 User Interface version 0 70 Status Client to IC Not Connected ver Not Connected IC to Cryostat Cocker Not Connected IC to Cryostat Pixel Not Connected IC to Digiport Not Connected System Message None Object isky Observer ime Comment iwhatever Pos Angle Plate Scale ET Command Figure 21 Screen Capture Array Control GUI FITS Header Tab 46 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 6 2 System Setup Commands The System Setup Commands prov
29. eeeeeeees 21 Figure 11Table of pFile COMMANGG cccecceeseeeeeeeeeeeeeeeeeeseseeseeeeeeseeseesesnseenseeneneaeaes 24 Figure 12Table of Bit Definitions for Clock Signals ccccccscessseeeseeeeeeeeeneeeneeeeeeeeees 26 Figure 13Table pFiles and Their Specific Array Operations ccscceeeeeeeeeeeeeeeeeeeeeees 29 Figure 14Screen Capture Array Control GUI Common Function Buttons seen 37 Figure 15Screen Capture Array Control GUI Command Line and Status 37 Figure 16Screen Capture Array Control GUI Observation Tab ccccesseeeseeeeeeeeeees 38 Figure 17Screen Capture Array Control GUI Setup Tab cecseseeeeeeeeeeeeeeeeeeeeeeeeeeeee 40 Figure 18Screen Capture Array Control GUI Engineering Tab seseeeeeeeeeed 41 Figure 19Screen Capture Array Control GUI Macro Tab ccccccceeeeeeeeeeeeeeeeeeeeeeeeeeed 42 Figure 20Screen Capture Array Control GUI System Tab ssssssunnnnnnnnnnnnnnnnnnnnnnnnnnd 44 Figure 21Screen Capture Array Control GUI FITS Header Tab csscessseeeeeeeeeeeeeees 46 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 1 Introduction This is the User s Manual for NSO s New Array Camera NAC an Infrared Array Controller and Data Acquisition instrument designed and built by Mauna Kea Infrared This manual is meant to describe the instrument for observational purposes The Operator s Manual covers instrument se
30. ering Tab is provided in 6 1 4 See the Operator s Manual for the engineering password Background resets are explained in Section 4 1 1 Background Resets BGR BGR Enable Checkbox BGRENABLE on off BGR ms BGRMS time milliseconds BGR min ms BGRMINMS time milliseconds BGR ns BGRNS time nanoseconds Array Bias Voltages Set array bias VGGCL CLKBIASVGGCL voltage Set array bias VDETCOM CLKBIASVDET voltage Set array bias VDDUC Command line equivalent lt is absolutely critical that VDETCOM be set to a more positive voltage than VDDUC or the array can be critically damaged X A Redstar3 User Interface version 0 70 JOE SS WE eme ee Client to t Connected Nor Connected Cocker Not Connected Cryostat Pixel Not Connected ort Not Connected System Message None Engineering Password Engineering Commands Disabled 3 BGR Enable VGGCL DAC 0 Bias Voltage 3 750 BGR ms ale VDETCOM DAC 10 Bias Voltage 3 750 BGR min ms 10 VDDUC DAC 11 Bias Voltage 3 750 BGR ns 0 EI Command 41 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 6 1 5 Macro Tab The Macro Tab provides the capability to define edit and execute macros A screen capture of the Macro Tab is provided in 6 1 5 X A Redstar3 User Interface version 0 70 IO rer Not Connected Clocker Not Connected Wo
31. et SETENV lt var gt lt value gt Create an environment variable For example setenv SettleTicks 12 allows you to put the following in your pFiles tick SettleTicks SHOW Show all internal variables TICK lt n gt Hold the current mask for n clock ticks This command is basically a no op that waits the specified number of clock ticks WRITE Generates a patFile which is written to the file specified by the OUTFILE command lt comment gt The comment character is used as the first character of a line Figure 11 Table of pFile Commands What is the clock frequency referred to in the TICK command This list may be incomplete Incoherent commands are not defined here See Tony s stuff Here is an example of a pFile Example pFile reset pmask on TODO This command is undefined in the table outfile test pat desc Description of Pattern 75 bdef frame 0x0001 bdef convert 0x0002 bset frame tick 2 bset convert tick 1 bclear convert 24 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE tick 2 write 4 2 1 2 patFile Format The patFiles contain a list of alternating Clocking Entry Durations and Clocking Entry Values Comments are made with the character as the first character on a line Ignoring lines occupied by comments odd numbered lines contain on Clocking Entry Duration Even numbered lines contain 16 bit hex Clocking Entry Values which spe
32. etween pedestal and subsequent scans Over the integration time high frequency noise is not correlated it occurs at higher frequencies So CDS can lead to an increase 2 in high frequency noise Reference Raytheon Infrared Center of Excellence Aladdin Il and Ill 1024 x 1024 IRFPA User s Guide and Operation Manual Preliminary undated 20 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 4 1 3 Single Reads Image capture with a single read arc_S consists of a global reset of the array waiting the integration time to permit accumulation of electrons in the array wells and an image signal readout Well Reset Voltage Signal Frame ntegration Ti Time Figure 10 Illustration of a Single Read 4 1 4 Coaddition In coaddition multiple scans of the same image may be taken Before each scan the array is globally reset These scans result in data that is accumulated into a single buffer Coaddition is useful when capturing images at a high rate and there is a desire to minimize the number of saved frames Note An excessively high number of coadds could create an image that would exceed the 32 bit range of the integer based storage buffers 4 1 5 Coaddition Rabin Mode TODO DT 4 1 6 Noise Reduction Reads NDR Reads The array controller is capable of multiple non destructive reads called NDR reads to reduce the read noise When performing NDR reads multiple reads are made f
33. ev 0 13 PRERELEASE 5 Observing with NAC TODO DT Write this section This text is an example from the NICI instrument Include Envisioned Operation The scientific projects that will be addressed with NICI will vary greatly in scope The core science projects however can be represented by a small group of Observing Scenarios that will be described in detail later in this section These observing scenarios will be used to explore in detail how NICI can work and how an observer can use NICI This section details operations and issues directly relevant to observers 5 1 Preparation for Observing This section describes the planning and procedures for preparation for observing The steps are listed as conceptual commands Specific commands are discussed in section 6 TODO DT All of the following operational sections are examples from the NICI instrument What operations must be documented for NAC 5 1 1 Pre Run Planning This section provides an overview of what observers may like to do before a night of observation TODO DT This procedure is an example from the NICI instrument It should be replaced with NAC instructions Select a list of science objects Find stars for the PWFS using the Gemini Observing Tool Determine a sky position that can use the PWFS probe science position Determine if the central star is sufficient for IAO use Determine ND filter need for the OIWFS from a table given the brightness and spectral
34. history and status messages as shown below Status Window Command Figure 15 Screen Capture Array Control GUI Command Line and Status TODO MT Check all of these GUI images against Charles new GUI stuff 37 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 6 1 2 Observation Tab The Observation Tab provides the functionality listed below Command line equivalents are listed in the parentheses A screen capture of the Observation Tab is provided in6 1 2 Observation Mode Selection e Selects between image capture Basic and Streaming o Basic System performs one capture as specified by the configuration parameters Integration Time setting ITIME time Pedestal Time monitoring what s command line equivalent to set CoAddition Count setting COADD num NDR Count setting NDR count Cycle Count setting CYCLES count Sets the number of cycles to repeat a basic non streaming read CoAdd Buffer selection DESTBUF bufsel o Streaming System makes continuous image captures TODO There was no source image to identify what functions are in the streaming mode tab What are they Cycle Count is not relevant to Streaming Mode Integration Time setting ITIME time Pedestal Time monitoring what s command line equivalent to set CoAddition Count setting COADD num NDR Count setting NDR count Cycle Count setting CYCLES count
35. ide for the setting of system configuration parameters like hostnames and port numbers for various entities in the Array Controller This section specifies the System Setup Commands 6 2 1 PsrvHostname Set Pixel Server Hostname PsrvHostname Set the hostname of the Pixel Server e Parameters hn Range hn This is a text string It must be the valid hostname of the PixelServer system e e Initial Values At start up hn is e Syntax PSRVHOSTNAME hn 6 2 2 PsrvPortNum Set Pixel Server Port Number PsrvPortNum Set the port number of the PixelServer e Parameters pn e Range pn This is a valid port number It must be the valid port number for the server software on the PixelServer system e Initial Values At start up hn is 2000 e Syntax PSRVPORTNUM pn 6 2 3 ClockerHostname Set Clocker Hostname ClockerHostname Set the hostname for the system on which the Clocker software is running Parameters hn Parameters hn Range hn A text string for the Clocker system s hostname Initial Values At start up the hn is set to Syntax CLOCKERHOSTNAME hn 6 2 4 ClockerPortNum Set Cocker Port Number ClockerPortNum Set the port number on which the Clocker is listening e Parameters pn e Range pn The valid port number on which the clocker is listening e Initial Values At start up the pn is set to 2000 e Syntax CLOCKERPORTNUM pn 6 2 5 PixelHostname Set P
36. ides an overview of Data Viewer Commands The data viewer provides an Image Monitor function and also provides frame viewing and manipulation A more detailed description of the Data Viewer can be found in the Data Viewer Description addendum to this User s Manual 36 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 6 1 Array Control GUI The Graphical User Interface for the Array Controller provides the capability to perform all observation functions and to set all configuration parameters The GUI is divided into six tabs There are the Observation Setup Engineering Macro System and FITS Tabs Each of these tabs functionality is described in the following sections Some of the settings have equivalent command line commands indicated in parentheses 6 1 1 Common Functions The GUI Tab includes a set of buttons for common operations Here the buttons are listed with their associated function and their equivalent command line command NG Redstar3 User Interface version 0 70 WE Figure 14 Screen Capture Array Control GUI Common Function Buttons GO Starts an observation GO STOP Gracefully stops an observation after the current exposure STOP QUIT Exits the GUI ABORT Terminates the observation immediately Not graceful TODO MT What is the command CONNECT Starts the IC software and connects the IC to its clients CONNECT There is also a command line and status window for command
37. ifications FPA socket and fanout board housing fiberglass supports and mounting bracket Cabling and connectors lab test cabling Cryo wiring and connectors Electrically shielded Baffled against stray light Temperature sensor Heating for active temperature control and warmup Temperature controller 3 1 2 FPA Control Specifications Operate Raytheon Aladdin III 1024x 1024 FPA Fastest fame rate 10 Hz minimum Single Read 15 Hz target Single Read Maximum exposure time 5 s All operations supported on either full array or single user specified subarray Global reset mode Sampling modes Single Correlated double Fowler optional Is Fowler sampling supported Readout noise using correlated double sampling readout electronics to contribute 25 to readout noise of FPA readout electronics system at 1Hz frame rate User programmable timing parameters Resistant to electrical interference FPA temperature selectable in range 30 50 K Readout of FPA temperature accurate to 2 K FPA temperature stable to 0 1 K over 6 hours 3 1 3 Communication and User Interface Specifications 1 TTL compatible sense line electrically isolated 2 RS 232 full duplex serial ports for filter wheel control 10 100 Ethernet connection for camera commands Stand alone mode with graphical user interface and data display Remote Mode via Unix Socket Communication over networks via ASCII command sequences Image monitor with gain and offset correction Non co ad
38. ion o If enable off the IC system will disconnect from the DigiPort channels Initial Values At start up enable is set to off Syntax SERIALENABLE on off 6 4 28 ReadSerial1 Read Serial Port 1 ReadSerial1 Read a string from serial port 1 Parameters string Range string A text string Initial Values none Syntax READSERIAL1 string 6 4 29 ReadSerial2 Read Serial Port 2 ReadSerial2 Read a string from serial port 2 Parameters string Range string A text string Initial Values none Syntax READSERIAL2 string 6 4 30 WriteSerial1 Write to Serial Port 1 WriteSerial1 Write a string out of serial port 1 Parameters string Range string A text string Initial Values none Syntax WRITESERIAL1 string 6 4 31 WriteSerial2 Write to Serial Port 2 WriteSerial2 Write a string out of serial port 2 Parameters string Range string A text string Initial Values none Syntax WRITESERIAL2 string 6 4 32 TimestampEnable Enable Timestamping TimestampEnable Turns timestamping on and off Is this still supported even though it s not required Parameters mode Range mode on or off o If mode on timestamping is enabled and system will mark the FITS header with the time of image acquisition based on the NTP maintained time o If mode off the system will mark the FITS header only with the current system time Initial Values O
39. ion Parameters count Range count count must be greater than 0 less than 20 Initial Values count is initially set to 1 at start up Syntax NDR count 55 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 6 4 21 SlowCnt Set Slow Count SlowCnt Changing the slow count changes the speed at which data is clocked out of the detector It increases the duration of the amount of time each pattern entry is held at the detector in increments of 42ns beyond the minimum hold time e Parameters count e Range count Must be between 0 and 1024 e Initial Values count is initially 0 e Syntax SLOWCNT count 6 4 22 DestBuf Set the Image Destination Buffer DestBuf Sets the destination buffer to which an image is buffered e Parameters bufsel e Range bufsel There are 8 coadd buffers to choose from numbered 0 to 7 e Initial Values At start up buffer 0 is selected e Syntax DESTBUF bufsel 6 4 23 FitsObject Set FITS Object Header Entry FitsObject Set the FITS object header entry e Parameters name e Range name A text string Typically this is the name or reference to the object viewed e Initial Values At start up name is e Syntax FITSOBJECT name 6 4 24 FitsObserver Set FITS Observer Header Entry FitsObserver Set the FITS observer header entry e Parameters name Range name A text string Typically this is the name of the ob
40. is given and then a list of the steps and their associated commands is given Note that user actions referenced are equally applicable to any scripts run remotely from the instrument sequencer An image of a distant object is focused on the array The controller is initialized and ready to gather this image This image is to be scanned in its entirety sent to the pixel server which then decodes and saves it for viewing The exact time of the image capture is needed as well as other information where the telescope is pointing the filters in the light path Here the basic steps to make an image capture are listed along with their command line equivalents in parentheses Note that this is a generic example Additional steps and commands may be necessary for some particular observation The user points the telescope at the desired object The user sets an integration time ITIME time The user sets an exposure mode ARCMODE arc_s arc_d The user sets an integration count NDR count The user sets a cycle count CYCLES count The user selects image data destination DESTBUF bufsel The user selects between Full Array and Subarray mode ARRAYMODE full sub If Subarray Mode is selected the user sets the subarray region of interest ARRAY x y wid hgt The user connects the IC to the peripherals CONNECT The user starts the exposure GO TODO MT Make sure these commands match Charles up
41. ixel Software Host PixelHostname Set the hostname for the system on which the Catcher software is running Parameters hn TODO MT verify that Pixel Catcher IPEngine2 e Parameters hn e Range hn A text string for the Pixel system s hostname e Initial Values At start up the hn is set to e Syntax PIXELHOSTNAME hn 6 2 6 PixelPortNum Set Pixel Software Port Number PixelPortNum Set the port number on which the Catcher is listening TODO MT verify that Pixel Catcher IPEngine2 e Parameters pn 47 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE e Range pn The valid port number on which the clocker is listening e Initial Values At start up the pn is set to 2000 e Syntax PIXELPORTNUM pn 48 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 6 2 7 DigiHostname Set DigiPort Hostname DigiHostname Set the DigiPort hostname the DigiPort serves the remote serial channels Parameters hn Range hn A text string for the DigiPort hostname Initial Values At start up hn is set to Syntax DIGIHOSTNAME hn 6 2 8 DigiPortNum Set DigiPort Port Number DigiPortNum Set the port numbers on which the DigiPort Serial Channels are listening e Parameters pn1 pn2 e Range pn1 and pn2 o pnt The valid port number on which the serial channel 1 is listening o pn2 The valid port number on which the serial channel 2 is listening e
42. lcium Fluoride entrance window The beam passes through a six position filter wheel and encounters a gold fold mirror Then the beam passes through a light baffle and falls on the array Distances of the various elements in the light path are illustrated in3 2 1 Where is focal plane to be located relative to the cryostat entrance window OUTDATED COLOPLATE OUTLINE Figure 2 NAC Optical Diagram These two diagrams are from NAC_8 26 03 ppt They may not reflect the changes to reduce the distance to the detector from the cryostat window TODO DT is checking on the currency 14 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 6 1084 TO FOCAL PLANE CENTERLINE OF Be SPECTROGRAPH TABLE OUTDATED 4 7244 TO CENTER OF FOLD MIRROR 5 8179 TO FRONT OF WINDOW 9 4879 TO FRONT OF FILTER 14 7903 TO CENTER OF FOLD MIRROR Figure 3 NAC Optical Distances Diagram The filter wheel has 6 positions that are populated with 2 square and 1 round filters as shown in the table in 3 2 2 3 2 2 Filter Wheel Description NAC has a filter wheel mechanism that will be controlled by the Observer to configure the instrument for a given observation The list below indicates the planned initial population of filters in the filter wheel Note that NSO may change the population of the filter wheel during or after commissioning 3 2 3 HOME J 2 Sq
43. ld be assigned by scrolling to the number next to the m setbutton button Finally click the m setbutton 43 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 6 1 6 System Tab The System Tab provides the functionality listed below Generally these parameters need not be modified by the user Command line equivalents are listed in the parentheses A screen capture of the System Tab is provided in 6 1 6 Pixel Server e Set the Pixel Server hostname PSRVHOSTNAME hn e Set the Pixel Server port PSRVPORTNUM pn Clocker e Set the Clocker hostname CLOCKERHOSTNAME hn e Set the Clocker port CLOCKERPORTNUM pn Catcher e Set the Catcher hostname PIXELHOSTNAME hn e Set the Catcher port PIXELPORTNUM pn DigiPort e Set the DigiPort Hostname e Set DigiPort Channel 1 Port DIGIPORTNUM pn1 pn2 e Set DigiPort Channel 2 Port DIGIPORTNUM pn1 pn2 Figure 20 Screen Capture Array Control GUI System Tab 44 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE NH Redstar3 User Interface version 0 70 Status Client to IC Not Connected IC to Pix erver Not Connected IC to Cryostat Clocker Not Connected IC to Cryostat Pixel Not Connected IC to Digiport Not Connected age None DigiPortSP1 Port 2001 PixelServer Hostname ipixelsrv1 ifahawaiiedu Clocker Hostname ipeng1 Buffer Hostname fipeng2 DigiPort Hostname inso_
44. lit spectrograph is used in conjunction with spatial scanning at least six buffers are needed to measure the four Stokes parameters Q U V that characterize the polarized light at each slit position namely V I V LO I Q GU and I U If a tunable filter is used full field imaging with sequential wavelength scanning the line must be scanned rapidly interleaved with polarization modulation so that differential seeing does not distort the line profile The number of buffers will depend on the number of wavelength positions in the line Four wavelength positions about the minimum needed allowing for Doppler shifts of the line position will require eight co add buffers to measure one Stokes parameter eg V l V 2 2 Dithering TODO DT Write this section This information is an example from the NICI instrument Since good flat fielding is very important to the data quality from NICI a provision has been made for small dithers in one dimension Dithering with NICI is a complex matter however Once the AO loop is turned on the AO system will keep the star on the mask even if the telescope is moved so offsetting the telescope will not affect a dither To dither the steering mirror in the AO wavefront sensor must be tilted to offset the AO guide point The focal plane mask must be moved in a coordinated move to put the mask at the new star position Dithers are expected to be only on the order of 1 arcsecond since the radius of the field is o
45. mode e Range mode Basic or Streaming 51 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE o In BASIC mode the system takes individual images Note that individual images may be made up of multiple samples such as if taking multiple non destructive reads or coadding multiple samples into an individual image o In STREAMING aka MOVIE mode the system continuously takes images It continues to do so until the Stop command is executed e Initial Values On initial start up CamMode is set to BASIC mode e Syntax CAMMODE basic streaming 52 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 6 4 10 ClkBiasVGGCL Set VGGCL Bias Voltage ClkBiasVGGCL Sets the VGGCL clock bias voltage e Parameters voltage e Range voltage 3 15 to 3 75 Volts e Initial Values On initial start up all clock bias voltages are set to 3 75 Volts e Syntax CLKBIASVGGCL voltage This command is password protected See the Operator s Manual for the engineering password command 6 4 11 ClkBiasVDETL Set VDET Bias Voltage CikBiasVDETL Sets the VDET clock bias voltage e Parameters voltage e Range voltage 3 15 to 3 75 Volts e Initial Values On in initial start up all clock bias voltages are set to 3 75 Volts e Syntax CLKBIASVDET voltage Note that VDET is also referred to as VDETCOM It is absolutely critical that VDETCOM be set to a more positive voltage than VDDUC o
46. n Each of these basic pattern building blocks contains a clocking pattern that executes one atomic operation on the array For example there are atomic operations for an array reset row increment and clocking out 16 pixels of array data For human viewing and editing these atomic operations are stored in pFiles A pFile is a human readable text file that provides a method for manipulating the 16 clock signals in such a way as to accomplish an array operation The pFiles are compiled into patFiles with the cpat utility It is possible although much more difficult for the user to create patFiles directly without using pFiles and the cpat utility The patFiles are text files that contain sequences of clocking entries for the 16 clock signals and durations for which the clocking entries should be asserted to the array The atomic operations contained in the patFiles must be applied to the array in specific sequences for clocking out the array The patFiles are sourced by the Instrument Controller software at startup Doesn t the DoFastMode command reload these files There are two sets of files one for fast readout with acceptable noise levels and another with a slower readout that has been optimized for the lowest noise levels possible Selection between fast and slow patterns is done with the DOFASTMODE command How does the user select between fast and slow patterns in the GUI The pFiles and patFiles can be found in the following
47. n assumed to be current row p3cf p Clock out first 16 pixels of row C assumed to be current row 28 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE p3cl p Clock out last 16 pixels of row c assumed to be current row p3cm p Clock out middle 16 pixels of row C from current position assumed to be current row p3cs p Skip 16 pixels of row C from current position assumed to be current row p3df p Clock out first 16 pixels of row D assumed to be current row p3dl p Clock out last 16 pixels of row D assumed to be current row p3dm p Clock out middle 16 pixels of row D from current position assumed to be current row p3ds p Skip 16 pixels of row D from current position assumed to be current row p4b p Reset the A and B row pair p4d p Reset the C and D row pair p5_idle p Executes a noop used for timing pnull p Executes a noop used for timing Figure 13 Table pFiles and Their Specific Array Operations 4 3 User Programmable Array Bias Voltages There are three user programmable array bias voltages VGGCL DACO VDETCOM DAC10 and VDDUC DAC11 voltages are programmable It is absolutely critical that VDETCOM be set to a more positive voltage than VDDUC or the array can be critically damaged TODO There doesn t seem to be a command for setting VDDUC Resolve and fix this text if necessary 29 NSO Infrared Camera Controller User s Manual R
48. n start up timestamping is off Syntax TIMESTAMPENABLE on off 57 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 6 5 Data Viewer Commands The Data Viewer Commands provide control and configuration of the Data Viewer also known as Image Monitor These commands are for configuring DV parameters in the Array Controller not commands handled by DV Detailed DV usage information and commands can be found in the Data Viewer Description addendum to this User s Manual 6 5 1 DV1Enable Enable Data Viewer 1 DV1Enable Enables the sending of images to instance 1 of the DV e Parameters enable e Range enable on or off o If enable on images are forwarded to an instance of DV The DV1 Hostname and DV1 Port number data are used to make the connection o If enable off images are processed and stored as specified by the General Setup and Configuration Commands e Initial Values At start up enable is off e Syntax DV1ENABLE on off 6 5 2 DV2Enable Enable Data Viewer 2 DV2Enable Enables the sending of images to instance 2 of the DV e Parameters enable e Range enable on or off o If enable on images are forwarded to an instance of DV The DV2 Hostname and DV2 Port number data are used to make the connection o If enable off images are processed and stored as specified by the General Setup and Configuration Commands e Initial Values At start up enable is off e Syntax DV2ENABLE on
49. nly 9 arcseconds The focal plane mask is mounted in a wheel and is moved by rotating the wheel thus dithers can only be done in one dimension and will follow a slight arc This will all be handled in the software but the observer should be aware that dithers will be only possible along this arc 2 3 References TODO DT include any references NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 2 4 Science Channel Performance TODO DT Write this section 10 3 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE Instrument Description NAC is a cryogenic 1 5 m imager implemented with a 1024x1024 Aladdin III array The science channel has a 6 position filter wheel that is initially populated with J H CO 4mic and HE1083 filters Image capture can be synchronized with external devices by a TTL sense line input into the Array Controller In nighttime astronomical applications an infrared instrument and its detectors are typically an integrated single purpose unit NAC s camera and its controller are designed to interface with different types of external optical systems and specialized instrument control programs current and planned The camera will be used both directly at the focal plane of solar telescopes and at the exit port of imaging spectrographs The key instrumental elements are A proven array controller platform that integrates temperature and mechanism control One 1024x1024 InSb Al
50. p and Configuration Commands Is there a command for the Reset to Pedestal Acquisition time The rtime parameter is referenced in the section on Pedestal Frames 6 4 1 ArcMode Set Exposure Mode ArcMode Selects the type of readout scheme for the acquisition either ARC_S or ARC_D e Parameters mode e Range mode ARC_S or ARC_D o InARC_S arc single mode the system will read out only signal images o In ARC_D arc double mode the system will read out both pedestal and signal images and will subtract off the pedestal image from the signal image to create the final image e Initial Values On initial start up ArcMode will be set to ARC_D e Syntax ARCMODE arc_s arc_d 6 4 2 Array Set Subarray Size Array Set the size and location of the subarray This subarray window determines which pixels are read out of the detector Note that this command is only relevant if the ArrayMode has been set to subarray e Parameters x y wid hgt e Range o xX 0 448 Must be some multiple of 64 Is this range correct o y 0 448 Must be some multiple of 64 o wid gt 64 Must be multiple of 64 The sum of the wid and x must be less than 512 o hgt gt 64 Must be multiple of 64 The sum of the hgt and y must be less than 512 e Initial Values o On initial start up system will be in FULLARRAY mode and will process the entire image 1024x1024 pixels o On switching to SUBARRAY mode initial values will be x 0 y 0
51. quency DC drift Another source of noise results from the fact that when an Aladdin III device is global reset to clear excess electrons the reset can leave small number of electrons in the wells of the imaging array Noise from the excess electrons and DC drift noise in an image can be reduced by using Correlated Double Sampling CDS CDS is referred to as arc_D in the Array Control GUI and commands CDS employs the use of a Pedestal Frame recorded immediately after the reset operation preceding image capture The Pedestal Frame is then subtracted from the subsequent Signal Frame This removes the noise in the Signal Frame image frame resulting from any excess electrons left in the well after the reset Since DC drift occurs over time scales much longer than typical integration times DC drift noise is also removed in the subtraction This results in a sharper less noisy image Well Reset Voltage o E D LL o E Ei P 5 LL u CH 1 D o A cl D op D H Integration Joe H Time Figure 9 Illustration of Correlated Double Sampling s Pedestal and Signal Frames In NAC the Pedestal Frame scan is taken after the rtime parameter ls this rtime still settable Verify that it is still named the same Subsequent Image Frame scan s will have this data subtracted out Usually if not always each reset may need a separate pedestal Note that subarray specifications will not change b
52. r the array can be critically damaged This command is password protected See the Operator s Manual for the engineering password command What s the command for setting VDDUC 6 4 12 Coadd Set Coadd Count Coadd Sets the system coadd count e Parameters num the number of coadds to perform to generate an image e Range num num gt 0 o Note An excessively high number of coadds could create an image that would exceed the 32 bit range of the integer based storage buffers e Initial Values On start up the coadd count is 1 e Syntax COADD num 6 4 13 Cycles Set Cycle Count Cycles Sets the number of cycles in BASIC mode This is the number of times to repeat the currently set up procedure e Parameters count e Range count o Applicable to Basic Mode image acquisitions only o Sets the number of times to repeat the image acquisition procedure based on the current settings e Initial Values On start up the cycle count is 1 e Syntax CYCLES count 6 4 14 DoFastMode Select Fast or Slow Clocking DoFastMode Select and use either the Fast or Slow clocking pattern sets e Parameters mode e Range mode on or off o Ifon the system will reload the clocking patterns using the Fast clocking pattern set to generate images The Fast clocking pattern set has been optimized for fast acquisition of images within a tolerable noise range 53 NSO Infrared Camera Controller User s Manual Rev 0 13 P
53. rking IC to Cryostat Pixel Not Connected Expected Time 10000000ns IC to Digiport Not Connected System Message None EOE DONS Denies aer Se ESE Function 0 Function 1 Function2 Function3 Stop Maski b WE CYS GuilnterfaceApp solar_gui_re AboutView java ArrayPanel java CallbackInterface Directory Filter ja f3 tea GG Execute Refresh msetbutton E Command Figure 19 Screen Capture Array Control GUI Macro Tab Macros are executed by selecting a macro and clicking the Execute button The commands in the macro will be executed sequentially Command echo command output and any errors will be displayed in the status window The Edit button opens the currently selected macro file in the gedit text editor They are simple ASCII files and can be editing with any editor Note that the displayed contents of a macro edited by using the popup gedit window or in an external editor do not refresh automatically The Refresh button will scan the directory specified by the path to refresh the list of macros in the Macro List and update the display of the Selected Macro Contents Macro execution can be terminated by clicking the Stop button 42 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE Macros can be assigned to one of the 8 Function buttons First select a macro from the Macro List Next select the number of the Function button which shou
54. rom the array without resetting the array This results in one frame with lower read noise The number of NDR reads can be set through the GUI or command line 4 1 7 Synchronized Start NAC is equipped with a hardware triggered science array controller so that image capture can be synchronized with external events by a TTL sense line TODO Verify and add more details about NAC s synchronization scheme 4 1 8 Well Depth TODO DT Write this section This information is an example from the NICI instrument For most operations with NICI a low well depth will be used to optimize the array performance At longer wavelengths such as L and M or for very bright stars deeper wells will be required The well depths provided are low medium and high Selecting a well depth changes the reset level on the array Large wells create 21 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE more hot and bad pixels The voltages that correspond to each well can be modified through the array controller engineering interface 4 1 9 Slow Fast Clocking Pattern The array controller is capable of fast and slow clocking patterns The fast pattern is optimized for soeed and has increased noise The Slow pattern is optimized for low noise 4 1 10 Subarrays Subarrays can be used to get shorter integration times if the entire field is not required 22 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 4 2 Array Clocking Patterns
55. server e e Initial Values At start up name is e Syntax FITSOBSERVER name 6 4 25 RTVEnable Enable High Speed Real Time Viewing RTVEnable Enable High Speed Real Time viewing This is accomplished by converting the image to 16 bits and binning from 1024X1024 pixels to 256X256 pixels e Parameters enable e Range enable on or off o If enable on real time viewing is activated images are not saved to disk but are binned down to 256X256 pixels and are sent to DV o If enable off image acquisition proceeds according to the current configuration e Initial Values At start up enable is off e Syntax RTVENABLE on off 6 4 26 SavePath Set FITS File Path SavePath Sets the path to which FITS files are stored Note this does not create or modify any directory structure The save directory must already exist e Parameters path e Range path A text string indicating the path to which data will be stored e Initial Values At start up path is set to nome nso redstar3 data e Syntax SAVEPATH path 56 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 6 4 27 SerialEnable Enable Serial Communication SerialEnable Enables disables communication from the IC over Ethernet and through the remote serial connections Parameters enable Range enable on or off o If enable on the IC system will attempt to connect to the two DigiPort channels via socket connect
56. t BGR There are 3 parameters that can be set to control background resets The first parameter NS specifies the time for which the reset line Vrstg is held high asserted The second parameter MS specifies the time between BGRs The last parameter Min MS specifies the time from the last BGR to the beginning of the acquisition process A timing diagram showing these parameters is provided in 4 1 1 A Image Acquisition Figure 8 Background Reset Timing Diagram The Image Acquisition process consists of the following e First a global reset is executed e Next comes a pedestal readout except for ARC_S single reads e Then a wait time is executed integration time 19 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE e Finally comes the signal readout The additional reset just before the image acquisition is so an exact duration of integration is known The time of integration of any particular pixel depends on how many pixels are ahead of it in the scan sequence as well as how fast each pixel can be scanned This information can be computed downstream if needed For single reads only the time between last reset and first pixel acquisition is used to compute the duration of integration For double reads integration time starts with the first pixel of the pedestal readout 4 1 2 Noise Reduction with Pedestal Frames and Correlated Double Sampling One source of noise in image capture is due to low fre
57. tening e Initial Values At start up pn is set to 30123 e Syntax DV2PORTNUM pn 6 6 DV Data Viewing and Arithmetic Operations The Data Viewer DV is described in an addendum to this manual called the Data Viewer Description DV provides Image Monitor capability during observation and can execute arithmetic operations on buffers and frames 60 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 7 Setup and Operation TODO DT Define software startup system checkout and shutdown procedures Are there any electronics that observers may need to power cycle This section details instrument startup checkout shutdown and temperature monitoring operations 7 1 Start up Procedure TODO DT 7 2 System Checkout TODO DT 7 3 Temperature Monitoring While in Use TODO DT 7 4 Shutdown Procedure TODO DT 61 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 8 Basic Troubleshooting TODO DT 8 1 Electronics Troubleshooting TODO DT 8 2 Array Troubleshooting TODO DT 8 2 1 Photoemissive Defects One defect to which arrays are susceptible is a photoemissive defect PED This occurs when an element on the array emits photons The method to identify PEDs is by looking at a dark signal frame If there are PEDs on the array they will appear on the dark signal frame as bright circular regions 8 3 Temperature Troubleshooting TODO DT 8 4 Vacuum Troubleshooting TODO DT
58. tores files to disk so the resulting filename will be in the format of somefile XXX fit with XXX being some number e Initial Values On start up the filename is somefile fit e Syntax FITSFILENAME name 6 4 18 FitsFilenumber Set FITS File Number FitsFilenumber Sets the base file number for all FITS files created and stored e Parameters num e Range num This is the base file number appended to the filename Users can enter a base filename then set the base file number and begin acquiring images As each image is stored the file number is incremented so images can be acquired sequentially without needing to rename each one individually e Initial Value What s the initial value e Syntax FITSFILENUMBER num 6 4 19 ITime Set Integration Time ITime Sets the integration time Integration time is made up of two factors the time to clock out the pedestal image assuming the system is in ARC_D mode otherwise this time is 0 and the wait time set in the electronics e Parameters time e Range time time must be greater than 0 and must be greater than the Pedestal time e Initial Values time is initially set to the pedestal time plus the minimum integration time e Syntax ITIME time 54 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 6 4 20 NDR Set Non Destructive Read Count NDR Sets the NDR count the number of non destructive reads to perform per acquisit
59. tup maintenance and troubleshooting procedures for NAC This document provides a description of the instrument and its components and how to observe with NAC NAC is an imaging facility instrument TODO DT Write some slick scientific background of infrared imagery and how it will advance the science goals of NSO What is unique about this instrument From the very beginning its design has been optimized to address this purpose with little compromise TODO MT Search and replace on NICI TODO MT Update and verify the Section descriptions Section 2 provides a science description of the instrument Section 3 gives an overview of the NAC instrument and it functional specifications Section 4 describes important observational issues All users should be familiar with this section Section 5 describes operational issues and procedures that every observer should read Section 6 describes data viewing and operation of the Array Controller through the GUI and via textual commands Section 7 describes instrument setup and operation procedures Section 8 provides information on basic troubleshooting Section 9 defines acronyms and definition of terms used throughout this document Appendix A gives the physical specifications of the filters 1 1 Related Documents The NAC User Manual has several documents that are included as addendums These addendums address the use and operation of parts of the NAC instrument e NAC User Manual Ad
60. type of the guide star Deselect objects that have poor guide options from list Select Focal Plane Mask Pupil Mask Dichroic Channel 1 Red Filter and Channel 2 Blue Filter for each observation Cipro Nes NoD 5 1 2 Daytime Camera Setup Calibration and Checkout TODO DT This procedure is an example from the NICI instrument It should be replaced with NAC instructions This section provides an overview of daytime tasks for setting up the science cameras calibration and checkout The procedure outlined here includes mapping calibration of the arrays and determining focal plane mask location Different masks and particularly user masks may not be located at the same pixel on the science arrays and therefore must be measured Set the Pupil Mask to 90 10 Set the Focal Plane Mask to Open Set the Dichroic to 50 50 H Set the Channel 1 Red Filter to h Set the Channel 2 Blue Filter to h Set the Fiber Calibration Source to the Pin Hole Grid Turn on the Gemini calibration unit to provide an extended illumination for the H filter Set integration parameters on both channels to 1 second 30 o N D 0e o N NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE Set the FITS comment field to Mapping Calibration Take and save the mapping calibration image with both arrays Determine the offset and rotation for quick look parameters Set the Focal Plane Mask to 0 3 arcseconds Set the FITS
61. uare 2 H 2 Square 3 CO 1 Round 4 4mic 1 Round 5 H 1 Round 6 He1083 1 Round Figure4 Population of the Filter Wheel Detector Properties Read Noise single read TBD TODO DT Read Noise Fowler sampling TBD Frame rate TBD Average Dark Current TBD 15 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE Well Size TBD Figure 5 Table of NAC Detector Properties 3 2 4 Coordinate System Description TODO DT Describe how the coordinates in the IC system s coordinates relate to telescope coordinates 16 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 3 2 5 Electronics Description The control electronics in NAC are comprised of a single implementation of MKIR s Redstar3 Array Controller called Instrument Control IC The IC handles mechanism cryostat temperature and array control The IC electronics interface with the array in the cryostat with the mechanism mounted on the cryostat and with an Ethernet switch which permits communication with external devices and servers A block diagram of these components is provided in 3 2 5 Instrument Cryostat Electronics Ethernet Switch Figure 6 Block Diagram of Major NAC Components 3 2 5 1 Instrument Control Electronics The IC Electronics components are the Array Controller Array Control Chassis a mechanism Junction Box JBox a mechanism Utility Box UBox a Pixel Server
62. umt 55 6 42 21 Slow At Set Slow e tu EE 56 6 4 22DestBuf Set the Image Destination Butter 56 6 4 23FitsObject Set FITS Object Header Emir 56 6 4 24FitsObserver Set FITS Observer Header Emtm 56 6 4 25RTVEnable Enable High Speed Real Time Viewing 56 6 4 26SavePath Set FITS File bah 56 6 4 27SerialEnable Enable Serial Communication 57 6 4 28ReadSerial1 Read Serial Port 57 6 4 29ReadSerial2 Read Serial Port 57 6 4 30WriteSerial1 Write to Serial Pot 57 6 4 31 WriteSerial2 Write to Serial bont 57 6 4 32TimestampEnable Enable Tmestampimg 57 65D ata Viewer COMMANA O cedex dadd iagetsased viaaseanedadaiadensad N a aa 58 6 5 1DV1 Enable Enable Data Viewer 58 6 5 2DV2Enable Enable Data Viewer 2 58 6 5 3DV1Hostname Set Hostname for Data Viewer 1 58 6 5 4DV2Hostname Set Hostname for Data Viewer 2 58 6 5 5DV1Port Set the Port Number for Data Viewer 58 6 5 6DV2Port Set the Port Number for Data Viewer 2 60 6 6DV Data Viewing and Arithmetic Opoerattons nenn nnt 60 TSCLUP ANG OPS atl Mies jisniiadcasivisieansteassaicnwitanameseativied acbereananawaid saeadeanadwantudrumsdaedwandantganneadad 61 7 1Start UP Procedure a a Eaa aa a aa aAa ae a aae aaa aaa aas 61 EE 61 7 3Temperature Monitoring While in Usel 61 TA SHUTAOWM ApoE Uha EA E E TEE E E E A useanecuavesoiesaianesuadea tan tinkccation si EE N TEE A 61 SGasie Lronblesioobtg et est zbagueet enebegektke be eE
63. used by the IC software to generate Superpatterns The supported commands are listed in Section 4 2 1 1 Name cpat compile pattern Synopsis cpat options lt pFile filename gt Options V verbose Produces very verbose output Default is off h help Displays summary of usage and options 27 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE 4 2 2 pFiles and patFiles Shipped with the NSO Array Controller There are a number of pFiles that ship with the NSO Array Controller Each contains a clocking pattern for a specific array operation A naming convention is used for the pFiles for most of the operations The first two characters specify the general type of array operation e pi Frame Start p2 Address Next Row i e advance row register counter p3 Address Next Column p4 Reset a Row Pair p5 Idle State For array operations rows are grouped into four row sets The next character if any may be which refers respectively to rows 1 2 3 and 4 of the four row set a b c or d The final character if any refers to specifics for the particular operation Note that there is special treatment for clocking the first and last 16 pixels of a row All pixels in between the first and last 16 pixels are referred to as middle pixels The pFiles and their associated operations are listed in the table in4 2 2 There are patFiles associated with each pFile that perform
64. wid 512 hgt 512 e Syntax ARRAY x y wid hgt 6 4 3 ArrayMode Set Array Mode Full Subarray ArrayMode Set the system to either capture full images or to use the subarray parameters to capture sub images e Parameters mode e Range mode full or sub o If mode full the system captures data from the entire detector o If mode sub the system captures data from only the part indicated by the subarray window parameters set by the ARRAY command e Initial Values On initial start up system will be in Full array mode e Syntax ARRAYMODE full sub 6 4 4 AutoSave Set Save Discard Data AutoSave Determines whether the data is saved to storage on the PixelServer or is discarded e Parameters a e Range a on or off o If a on data is stored on the PixelServer 50 NSO Infrared Camera Controller User s Manual Rev 0 13 PRERELEASE o If a off data is discarded at the PixelServer though system may be set to send images to the DV e Initial Values On initial start up AutoSave will be on e Syntax AUTOSAVE on off 6 4 5 BgrEnable Background Reset Enable BgrEnable Enables and disables Background Resets e Parameters mode e Range mode on or off o If mode on the system performs BGR when the system is idle o If mode off the system does not perform BGR when system is idle e Initial Values On initial start up BGR is set to on e Syntax BGRENABLE on off This

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