HARPS-N Operation Guide - Telescopio Nazionale Galileo
Contents
1. New Short Time Scheduler Observing Block Radial Velocity Support Astronomer Signal to Noise Ratio To Be Confirmed To Be defined To be fixex Thorium Argon Telescopio Nazionale Galileo Telescope Operator Visiting Astronomer2. Telescopio Nazionale Galileo HARPS N Operation Guide Draft Manual version 2 2 7 TNG MAN HARPN 0003 Date 18 03 2014 Prepared R Cosentino Change Record Section Page affected Reason Remarks 14 12 2012 First version 14 01 2013 Autoguider added 04 02 2013 12 02 2013 New sequencer and Labview SW MZ OSO V2 2 3 22 05 2013 All document Paragraph 3 5 added V2 24 19 11 2013 _ All document a 15 01 2014 New sequencer and expmeter 18 03 2014 Double star guiding procedure added V2 2 11 09 2014 Le Minor changes TNG MAN HAN 0003 3 Contents L ICI 4 Lil SOC 4 1 2 Additonal IniofmMatioli iscriva 4 lib GONEACEMIOONA ia 4 2 Before ti 0PSe a 210 8 eee ee eee eee ree eee eee eee nee eee 5 2 1 The Observation blocks preparati0N u ine 5 2 2 The Sequencer GUI initialization and Operation ss ssrsssresrrssresrnsorensresnnssnrnnnennnnnnnnnronnnsnnnnneennes 6 246 DZ 7 2 2 2 Sequence Control buttons oo eesesssesssceecssssessceeseesesseesesesseseseseeseeeseseseecacssesessseeseesesesesenaeess 8 Z25 INSEIMENEGORLFOLDUTONS rn 8 Zib DMOFCNISl an 8 ZZ5 Bor e eUD O E E E E E 9 2 2 6 The standard calibration daily calibration ss ssressrssrsssnsnrnssnessnnsnnnunsnnnnsnnsnnnsnnsnnssnsnnnnss 10 gt OUTOON ade aa Eaa E EENE N E EEE 11 SL Ieri a 11 34 Ti 0cISprioeediie ai 11 3 3 The pointing model procedure ou cessssesssscessssecseeessssssescseeseeessseescsssssseaseeseeseseseescssss
3. Zone WET MJD 56070 079 LT 02 54 00 E ZELO AT 06 18 27 Offset 0 Date 23 05 2012 16 46 50 ST 11 49 28 20 11 50 D Name arget Alpha Delta My St TExp Al Nr Template Observation 207 HARPN_ech_obs_ai 12 1 2 MAIN PARAMETERS DET DPR s 214 OB TECHNICAL 0 0 0 0 i 214 HARPN instr_lcu_int 01 INS MIRR POS 217 HARPN instr ag_init Ol m 214 HARPN tec_set lamp l eee Oles 2eme l r 224 OB TECHNICAL 0 0 0 0 INS OPTIL POS 227 HARPN_instr_ag_ init vee Olie o By OB_TECHNICAL 0 0 0 0 INS OPTI2Z POS 234 HARPN_tec_startnight s s s Olie s 247 OB_ SCIENCE HD127334 13h29 41 47 4 6 0 Ll 1 INS ROTI DST 259 OB_SCIENCE HD127334 14h29 41 47 4 6 0 6 5 z cita gt 27 OB SCIENCE HD127334 14h29 41 47 4 6 0 Lee 10 o 274 OB SCIENCE HD127334 14h29 41 47 4 6 0 1 1 110 sini gt 289 OB_SCIENCE HD127334 13h29 41 47 4 6 0 1 10 o 299 OB SCIENCE HD127334 14h29 41 47 4 6 0 Lee 10 INS LAMPI ST 0 w gt DY OB SCIENCE HD185144 19h32 69 39 4 4 0 6 10 JY OB_CALIBRATION NONE 2 Q Grice Doo 2 INS LAMP2 ST olv 31 HARPN_ech_cal waveAB 02 40 0 1 tend 31 4 HARPN_ech_cal waveAB 02 40 0 1 gt 324 OB _ CALIBRATION NONE gt gt 0 8 Sos 2 H INS LAMP3 ST liv By OB_SCIENCE K00141 19h12 50 39 05 81 0 3 3 337 HARPN_ech_acq_objAB
4. tian Time ms O1 1 197 0 994 1 217 0 358 suli Figure 4 LCU Device Monitor A bell sound confirms the correct execution of the command 2 2 6 Thestandard calibration daily calibration The daily calibration is very important to do in the afternoon about 1 hour before the start of observation 1 From the NSTS selects the standard calibration OB 2 From the sequencer GUI click in the Next OB button 3 Verify in the DRS if the calibration goes without errors THAR1 lamp seems to be ON since less than 10 minutes Please wait 371 sec more Continue without waiting Figure 5 Thorium1 lamp warm warning If THAR1 lamp is not used after please turn it OFF Automatic turn OFF in 270 sec Turn THAR1 OFF Let THAR1 ON Figure 6 Thorium lamp1 turn off warning TNG MAN HAN 0003 11 During the command execution the status is visualized into the observation Execution logs window and at the end of execution a bell sound confirms the correct execution of the command if the sound is a horn noise this means that something goes wrong and an error should be shown in the observation Execution logs window The standard calibration procedure is about 11 minutes long Very important When the calibration ends turn off the thorium 1 lamp 1 Click on the Turn OFF button of THO1 lamp 2 Click on the Turn OFF button of THO2 lamp if you will not observes in thorium simultaneous mode 3 Onthe LCU Device
5. 19h12m09 50 39 05 8 13 02 2 Meridian Zenith y Oo 56071 Start Night End Night Figure 1 Short Term Scheduler a af oe Ke Ca 05 18 27 Moon Alpha 05h37m Moon Position lt amp 2 2 The Sequencer GUI initialization and operation gd TCP 2000 Delta 21d32m Vel No Target INS OCS TPL TEL Tun Tharl Thar2 After the startup of HARPS N the instrument is ready to the initialization of the subsystems and the start of operation The sequencer GUI Figure 2 is divided into several sections The sequence control buttons for the interaction with the observing blocks The Instrument control buttons for the interaction with the HARPS N s subsystems The observation Execution logs window where the commands execution and the errors are shown The acquisition control buttons expose repoint etc allows to do actions related with the autoguider s image visualized by the DS9 application The DS9 application shows the autoguider s image and interacts with the sequencer During the command execution the status is visualized into the observing status window and at the end of execution a bell sound confirms the correct execution of the command if the sound is a horn noise this means that something goes wrong and an error should be shown in the observing status window TNG MAN HAN 0003 7 2 2 1 Initialization From the instrument control sectio
6. 94 HARPN ech_acq_objAB 03h52m54 000 00 00 19 000 2 Add the HARPN focus template ID o Name Target Alpha ss Delta 9 Of HAM OB SCIENCE 9596 03h52m54 000 00 00 19 000 9 HARPN ech acq_ objAB 03h52m54 000 00 00 19 000 94 HARPN focus sti BER TNG MAN HAN 0003 12 3 From the sequencer execute this OB by clicking the Next OB button The sequencer sends the commands to move the telescope acquire an image from the autoguider camera and shows the image in the DS9 4 Click on the star and then click on the Go button in the Acquisition Image window The sequencer sends an offset to the telescope puts the star in the fiber position starts the autoguide executes the focus procedure moves the M2 mirror at the best position and acquire a new autoguider image At this point the user can execute the enabled actions Save Focus Cancel Focus Expose Get infos from DS9 etc BUT must to click on Save Focus or Cancel Focus button to end the focus procedure and enable the next button The focus procedure is about 10 minutes long 3 3 The pointing model procedure Sometimes the pointing precision can be poor and the telescope could need the execution of a pointing procedure The pointing procedure must be done in collaboration with the telescope operator TO and the TO has to know some information during the procedure The sequences of actions to manage the pointing procedure are 1 In the N
7. Diameter 5 Selects the Hole menu and turn on No the Manual Hole find option Figure 12 6 Selects the Feedback menu and click on the Press to Start Harps exposure if delay or Error button Figure 10 After this procedure the AG sends the feedback to the sequencer and the scientific exposure starts TNG MAN HAN 0003 20 Appendix A Useful Harps N webpages http www tng iac es instruments harps TNG Observing Manager http ntcs glassfish1 tng iac es 7080 ntcs ocsservice manager ui observingmanager jsf HARPS N Sensors http tngweb tng iac es harps http ntcs glassfish2 tng iac es 7080 webcontrolpanel ui instrumentstatuspanel jsf Serrurier Temperature And http ntcs glassfish1 8080 aopt service gui ui serrurier jsf Focus Status TNG Telemetry Cache Service http ntcs glassfish1 7080 ntcs cacheservice monitor ui modifytelemetry jsf Appendix B Actions of multi task commands Telescope start night e Open the HARPSN derotator cover e Power on the Dolores electronics e Initialize the Dolores movements e Move the entrance slider M4 to the HARPS position e Power on the M3 control e Move M3 to Nasmyth B the TO had to set the telescope in Nasmyth B mode e Power off the M3 control Telescope end night e Close the HARPSN derotator cover Instrument start night HARPN_tec_startharps e FE_adczero e FE startadc e FE gettelemetry e VC startexp e VC useshutter Instrument end nigh
8. Monitor verify the lamps status Figure 4 Note If the TH1 lamp remains in the on state after a while a warning window appears The observer can decide if maintain the lamp in on only if he is using it or turn off it 3 Observations 3 1 The start night Before the start of observation the system needs that some processes starts and then the telescope is ready to work in HARPS N mode 1 Be sure that the system is initialized and ready to work Start up procedures in the HARPS N Quick Start Guide 2 In the sequencer GUI click in the Start Night button in the Instrument Control section and wait the end of execution of the command Now HARPS N is ready for observations Note The Start Night button includes the preparation to observation of the telescope and of the instrument The user can do that operation separately by using the Start Tel and the Start Ins Buttons recommended Action 3 2 The focus procedure At the beginning of the night may be suitable do a focus procedure doing the following actions 1 Inthe NSTS selects a star from the catalogue and delete the HARPN_ech_obs_all template The star can be the first object of the observation schedule to save pointing time I suggest to not selecting a faint object for the focus In case of doubt ask to the TO if the star is compatible with the focus procedure and the night conditions ID Name Target Alpha Delta o A HAM OB SCIENCE 9596 03h52m54 000 00 00 19 000
9. NG MAN HAN 0003 9 SAOlmage ds9 File Edit View Frame zoom Scale Color Region WCS Analysis File 201304027001826 fitsLagacq Ob ject ooo Value 1069 FKS a 135 32767 d 15 25624 Image Wi cn Y 497 185 Frame 1 Zoom 0 505 Angle 0 000 file edit view frame zoom scale color region wos help i linear log power square root squared histogram min max zscale Ce O a l S o Figure 3 DS9 terminal with a binary star in the field The compass is represented by the yellow axis with the orientation shown in Figure 3 2 2 5 Before the calibration Few minute before the start of calibration about 10 minutes the observer has to turn on the thorium lamps If the elapsed time is less then 10 minutes a warning windows appears in this case the observer has to wait the time indicated in the popup window The observer can ignore this warning but can compromise the quality of observation In the Instrument control section 1 Clickon the Turn ON button of THO1 lamp 2 Click on the Turn ON button of THO2 lamp 3 On the LCU Device Monitor verify the lamps status Figure 4 TNG MAN HAN 0003 10 LCU_DEYM i Operate Tools Window Help HARPS N LCU Device Monitor Device Status fear rare fron Cale cen 341 000000 8 200000 DONE DONE Pos LIMIT oS ee E Pos fo co0000 pore__ ifpore_ fpone_ fcone fe pone SWSIM THRES PARALL ELENC RA DEC
10. STS select a star from the catalog HARPSN PointingModel cat located in home guest GAPS CATALOGS 2 Delete the HARPN_ech_obs_all template ID Name Target Alpha Delta See as o 17 HAM_OB_SCIENCE HR4554 00h00m00 000 53 41 41 100 me 1 HARPN ech acq objA 00h00m00 000 53 41 41 100 3 From the sequencer execute this OB by clicking the Next OB button and tell to the TO when the AG image starts this is the critical point of this procedure Sequencer Thu Dec 27 23 12 29 UTC 2012 gt launch AG expose 4 When the image of the star appears clicks on the star then clicks on the Repoint button in the Acquisition Image window and tell to the TO that the offset has been applied 5 The TO takes note in the VME of the offset applied the paralactic angle and uses these data in the pointing procedure 6 Repeat the cycle with another star from point 1 until the pointing procedure reaches the precision expected 3 4 The science OB execution In the execution of a scientific OB the object has to be pointed and centred in the fiber with the intervention of the observer 1 In the NSTS select star from the catalog TNG MAN HAN 0003 13 _____Name__ _Target Aipha Delta _ HAM_OB_SCIENCE HR4554 00h00m00 000 53 41 41 100 aaa ne see HARPN_ech_acq_ objA 00h00m00 000 53 41 41 100 HARPN_ ech_obs_all ni 2 From the sequencer execute this OB by clicking the Next OB button The sequencer send
11. UNNING 22 32 26 OK Acquisition Control 22 32 26 Execute FEU_ADCMonStop Add Magnitude oH Dust Cover 22 32 27 OK 22 32 27 START HARPN_ech_obs_all X Coordinate 236 0 OPEN 22 32 27 Execute INTERNAL_SwitchLedsToShutter 22 32 27 OK Y Coordinate 268 0 22 32 27 Execute FEU_NDSetByExptime TUN Lamp 22 32 28 OK FWHM X arcsec 0 0 ui i FEU_ADCMonsStart FWHM Y arcsec 0 0 e OFF 22 32 28 Execute INTERNAL EXPM_PowerOFF Peak 0 0 22 32 28 OK 22 32 28 Execute INTERNAL_EXPM_PowerON Background 1234 06 22 32 29 OK w OFF 22 32 29 Execute INTERNAL CheckTharUsage 22 32 29 OK THAR2 Lamp 22 32 29 Execute AG_GuidingStartRec 22 32 29 OK fe 32 29 Execute UC_Expose Il gt Figure 2 The Sequencer GUI Auto Guiding READY READY THAR1 Lamp ON Li v Automatic Acquisition Note 1 The red log Failed to fetch data from telemetry is not an error and can be ignored as error if appears during calibrations or in acquisition with exposure time less than 5 seconds Note 2 The yellow log Warning Final AG guide FITS file not found is a warning that don t affect the observation we are working to fix this bug Table 2 Acquisition Control buttons Get DSS fields in Visualize the compass in the DS9 DSI new image autoguider acquisition field TNG MAN HAN 0003 8 2 2 2 Sequence Control buttons Next OB executes the next block avai
12. ame 1 S_TEL StartNightHARPS FI e LES Status FINISHED 18 03 2013 18 03 2013 18 03 2013 cea CEE 18 03 2013 18 43 28 18 03 2013 Ez Sequence HARPS BBE7702E an 18 03 2013 Command executed successfully B0 Figure 7 TNG Observing Manager webpage 3 6 The Autoguide The autoguider starts when the observer clicks on the accept button of the sequencer GUI and two windows opens Figure 8 and Figure 9 1 The HARPS N AutoGuider windows TNG MAN HAN 0003 16 2 The Integrated Image window AG GuidingSimple vi fle Edt Qperate Too Window Help ti KS AG_GidUpdateTask vi Bede HARPS N AutoGuider 2 ar image Hstogram ostato dest iframe ato lt gt aaa ee din A ori rice fem Center 1265 7 Center 267 7 Computed pixeis Det a st gives Center 216 0 Center 1218 Reset to Guide Error arcseconds 7 faa e AG_GuidingSimple vi Image Averaging 2391 ing fie Li Operate Took Window thb 3 53 ale O AG_GidUpdateTask vi l x Fle Edt yew Project Qperate Too Window Help gt en Integrated Image EVETT VANAN F a E E TE e nu Guide Error arcseconds for i cene Fas MI cone gt EAN Guide Error arcseconds z Mean Image Averaging Error Message x Figure 9 Autoguider and Front End Monitor manual mode 3 6 1 The HARPS N AutoGuider windows This window shows the autoguider images some information about the guide settings and status an
13. d allows changing the guide mode 3 6 1 1 Feedback offload tab The feedback tab opens a menu where the user can change the parameter of the tip tilt correction and can postpone the start of scientific exposure e Use Feedback gt enable disable the tip tilt correction the offload remain active e The gain and delay value change the behavior of tip tilt TNG MAN HAN 0003 17 e Wait for user gt freeze the starting of autoguider and scientific exposure e Guiding now gt unfreeze the starting of autoguider start autoguide Feedback Mask Hole l Wait for User Guiding Now Use Feedback Gain 5 0 2 Camera Exposure Time ms J 90 Figure 10 Feedback panel The Wait for user button remains active few seconds before the automatic starting of autoguide If the user sets this button on Yes the autoguide get stuck until the Guiding Now button is selected 3 6 1 2 Mask tab To avoid the contamination of others star close to the guide star during the guide a mask around the guide star can be selected The observer can select the mask s radius around the guide star all the object out the mask will be ignored by the guiding algorithm Use Mask Mask Diameter arcsec ch 0 0 Figure 11 Mask window 3 6 1 3 Hole tab With this panel is possible to select the hole find method the centering algorithm and the hole s dimension optional e Manual Hole Find gt selects the manual
14. essseaeasaeeeeseeeesanss 12 54 Inescenc0OBe amp edilizia 12 3 5 The Observing Control Software OBS s sss sssssssssressnsnrnssnensnssnensnsnnnnnnnonnnnnnnnnennnennnonnnnnnnnnnnnnnnnennennnes 13 3 5 1 Common situation The pointing sends the telescope to the limit switch 13 TM A UU 6 ra 15 3 6 1 The HARPS N AutoGuider windOWS ss sssssesssnssrrssnessnnsnenenennnnsnnonnnnnnnnnennnennnnnnnnnnnnnnnnnnnnnnnnnnnes 16 3 6 2 The Integrated Image WiNdOW csesssscsesscessesesseseseeseseesseneseseenssesessensseeseneaeaeeneeaseseneeaeeneeaeans 18 3 6 3 Procedure to guide on narrow double stars by using the Mask 19 Appendix A Useful Harps N webpages eeene 20 Appendix B Actions of multi task commandS i 20 Appendix C Actions of focus procedure commandS iii 21 Appendix D List of acronymS 22 TNG MAN HAN 0003 4 1 Introduction 1 1 Scope This User Manual is intended to give all necessary information to potential users of the HARPS N instrument to help them to use the instrument and manages the observation at the TNG telescope The following documents are closely related to this manual and should be consulted as well e The HARPS N User Manual TNG MAN HARPN 0002 e The HARPS N Startup Manual TNG MAN HARPN 0001 e The New Short Term Scheduler User Manual NSTS e The DRS User Manual OG MAN HAN 13 0004 Both are available thro
15. lable of the NSTS Single OB if checked executes one block when the user click on Next OB button Queue Mode gt if checked executes a series of NSTS blocks according with the NSTS rules when the user clicks on Next OB button Terminate exposure ends the current exposure and save the scientific frame Abort block aborts the current block 2 2 3 Instrument control buttons Start night button executes the Telescope Start night and the Instrument start night Start Tel button gt executes the Telescope Start night Start Ins button gt executes the Instrument start night Start EM button starts the exposure meter and open the GUI Dust Cover buttons Open and Close the dust cover Note The Start Night button includes the preparation to observation of the telescope and of the instrument With the new two buttons the user can do this operation separately by using the Start Tel and the Start Ins Buttons 2 2 4 Other changes The sequencer now has a feedback with the NSTS If the NSTS is not in execution the sequencer visualizes a warning A Problem while trying to send Block feedback to STS Note When the sequencer is restarted after an error the status buttons are not refreshed to the correct status except the lamps buttons which are refreshed after a while The undefined yellow status of the other buttons is not real and can be ignored if the user is sure that the instrument is initialized and ready to work see Figure 2 T
16. n click on the LCU Init button and wait until the command ends Then click on the AG Init button and wait until the command ends The system now is ready to calibrations but not for the observations HARPS N NSequencer And Observations Control System Sequence amp Instrument Control Commands Simulation Observations Execution logs 4 Sequence Control Instrument Control ENI Ea cl oll lah ERRANTE 22 29 38 START HARPN_ech_acq_objAB Sean Naht gt Terminate Exposure 22 29 38 Execute EXPM_SetMagnitude s 22 29 38 OK Single OB Queue Mode Q Abort Block 22 29 38 Execute FEU_ADCMonStart Current OB Status 22 29 38 OK Start End Telescope 22 29 38 Execute AG_GuidingStop Exposure 1g 400 900 22 29 38 OK 22 29 38 Execute FEU_CalMirrorOpen Estimated SNR 4 92 cn ES 22 29 46 OK 22 29 46 Execute CU_LampsSelect OB Block ID 9 Start End Instrument 22 29 50 OK 22 29 50 Execute TEL_Slew OB Block name OB_SCIENCE READY 22 30 59 OK 22 30 59 Execute INTERNAL_SetAGAcqDirectory Template ID 2 22 30 59 OK Template name HARPN_ech_obs_all 22 30 59 Execute AG_Expose 22 31 04 OK NEXP 1 22 31 04 Execute INTERNAL_CheckAQ 22 31 04 OK Status EXPOSING LCU 22 31 04 Automatic mode search star 22 31 09 Found O star s 22 32 01 Execute TEL_Offset 22 32 13 OK 22 32 13 Execute FEU_CalMirrorSet Exposure Meter 22 32 13 OK 22 32 13 Execute AG_GuidingStart R
17. on when the condition needs it 3 5 1 Common situation The pointing sends the telescope to the limit switch When one of these conditions will occurs e a pointing command moves the telescope to the limit switch position e the telescope operator thinks that the telescope can reach the limit switch during the observation The telescope operator has to stop the command by clicking the cross button in the option section in the tng observing manager webpage On the sequencer the astronomer has to wait doing nothing until the sequencer ends the OB with an abort At this point the telescope operator can move the telescope to an appropriate position and the astronomer can repeat the aborted OB When the tracking moves the telescope close to the limit switch and the telescope operator must to stop the telescope during the science exposure The procedure to stop the processes is the following TNG MAN HAN 0003 14 1 from the sequencer terminate the exposure of the current OB click on terminate exposure button 2 from the tracking system stop the telescope Note if the executing OB consists of more than one exposure the astronomer has to terminate all the exposure or click on the abort block button at the end of the first terminate exposure TNG MAN HAN 0003 15 ol TNG Observing Manager OCS Systems ONLINE ONLINE ci ONLINE ONLINE ONLINE OFFLINE OCS Execution Table History N
18. or automatic method The auto hole method gt select the algorithm for guiding end for the hole center calculation e Hole shift Limit gt changes the maximum variation permitted in pixels in hole position calculation e Update Period gt number of frames used in hole position calculation TNG MAN HAN 0003 18 Feedback l Mask Hole Manual Hole Find Auto Hole Method e 2D Curve Fit Hole Shift Limit pixels d4 Update Period frames 25 Figure 12 Hole tab window In the The HARPS N AutoGuider windows Figure 8 the white cross represent the center of the star and the Red Cross is the center of the fiber At the bottom of the panel a button menu allows the user to change the zoom auto hole method The algorithm for the calculation of the fiber position and for the star s center position can be choose between the centroid or 2Curve algorithm 3 6 1 4 Simulation tab This panel was used in engineer tests It is no useful in normal observations Sim Simulate Shutter Open Shutter Figure 13 Shutter simulation panel 3 6 2 The Integrated Image window This window shows the integrated images some information of the guide s execution and allows to change the reference point fiber position when the manual mode is stetted The information shown depends by the hole s find method selected Manual mode the fiber s reference position is based on a table and can be modified by the
19. s the commands to move the telescope acquire an image from the autoguider camera and shows the image in the DS9 3 Clickon the star and then click on the Repoint button in the Acquisition Image window The sequencer sends an offset to the telescope puts the star in the fiber position acquires another image from the auto guider camera and shows the image in the Acquisition Image window 4 When the image appears if the star is in the fiber position red circle click in the Go button in the Acquisition Image window After that the sequencer starts the auto guide and the spectroscopic acquisition When the OB ends a bell sound confirms the correct execution of the command and the Next Acquisition button turns in active mode 3 5 The Observing Control Software OBS The OCS is the interface to the Telescope Control System TCS The interface enables the instrument to send commands to the telescope via the TNG library Currently HARPS N is able to send three commands Pointing AG offsets and M2 offsets to calculate and correct the focus via an automatic procedure The connections between both systems are completely asynchronous but when the command finishes successfully the TCS returns an Ok status When an error condition has arisen the TCS also returns a message back to the sequencer flagging that condition In the Observing manager webpage is possible to monitoring the actions and the results The operator can also interrupt the acti
20. t HARPN_tec_startharps e AG stopguide FE stopgettelemetry e FE stopadc e VC stopexp LCU init e Execute USB init e Execute FEU init e Execute CU init e Execute EXPM init e Execute EXPM monitor start TNG MAN HAN 0003 21 Appendix C Actions of focus procedure commands e Start the pointing move the telescope e acquire an image from the autoguider camera and shows the image in the DS9 e Wait for User selects and puts the star in the hole position e Send the offset to telescope repoint e Senda M2 offset 0 25 e starta loop of M2 offsets 0 083 and exposure meter acquisitions default 7 step e Calculate best focus e move M2 to best focus e acquire an image from the autoguider camera and shows the image in the DS9 e wait for user actions save or cancel focus While the user can execute actions repoint expose get info etc TNG MAN HAN 0003 22 Appendix D List of acronyms ADC AG CCD CCF CFC CU DFS DRS E2DS ETC FEU FITS FWHM HARPS N ND NSTS OB RV SA SNR TBC TBD TBF ThAr TNG TO VA Atmospheric Dispersion Compensator Auto Guider Charge Coupled Device Cross Correlation Function Continuous Flow Cryostat Calibration Unit Data Flow System Data Reduction Software Extracted 2 Dimensional Spectrum Exposure Time Calculator Front End Unit Flexible Image Transport System Full Width at Half Maximum High Accuracy Radial velocity Planet Searcher in the North hemisphere Neutral Density
21. ugh the TNG web page http www tng iac es instruments harps 1 2 Additional information The latest information updates about the HARPS N instrument can be found on the HARPS N web pages http www tng iac es instruments harps 13 Contact information Feedback on this User Manual from users is encouraged Please email to cosentino tng iac es TNG MAN HAN 0003 5 2 Before the observations Starts up the system following the instructions of the HARPS N Quick Start Guide and take care to read all the advices reported at the beginning of the manual 2 1 The Observation blocks preparation From the NSTS the observer can prepare the sequence of observation blocks of the night Figure 1 The target can be inserted directly in the NSTS or by using a catalog file that contains the objects information The format of the catalog file is an ascii file and the fields separator is a TAB ascii code 9 The fields of the catalog are shown in Table 1 the mandatory fields are shown in bold format An example of catalog file is shown in the HARPS N webpage http www tng iac es instruments harps data SpStdHARPSN cat Table 1 Catalog file entries mame object code O OOO OSOS S O program identificator es TAC_xx TNG MAN HAN 0003 DB New Short Term Scheduler File Edit Options Communication Help 8 em He Jli pi ILa Palma Unix Time 1337738040 UT 01 54 00 Night Nautical UT 20 57 27
22. user dragging with the mouse the green cross pointer Automatic mode the fiber s reference position is calculated by the selected algorithm The red circle represents the contour of the star the blue circle the shape of the hole 3 6 2 1 Main frame image e Average image e Hole fit image e Fit TNG MAN HAN 0003 19 e In e Out e Hole e Star 3 6 2 2 Hole Position e Manual set e Computed e Default e Reset position 3 6 2 3 Image Averaging e Frames avaraged e Frame until frame updated e Restart averaging e Error message 3 6 3 Procedure to guide on narrow double stars by using the mask When the observed star has a companion that interferes with the guiding you should use the mask to avoid guiding errors The steps to enable this operative mode are 1 When the guide begins to show images and before that the exposure start the operator has to freeze the starting of autoguider by clicking on the Press to Delay HARPS Exposure button of the Feedback menu in the HARPS N Autoguider window Figure 10 2 Selects the Hole menu and turn on Yes the Manual Hole find option Figure 12 From the Hole menu the operator can choose the Auto Hole Mode 2D Curve Method or Centroid algorithm depending on the situation 3 In the Integrate Image window drag the star until that the desired star falls into the fiber 4 Select the Mask menu turn on yes the Use Mask option Figure 11 and choose the best Mask
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