here - Alcor
Contents
1. Address 9 C Documents and Settings iy Gocuments skyvwatch Date Modified 14 06 2010 18 19 1406 2010 17 54 14 06 2010 17 54 14 06 2010 18 17 14 06 2010 18 15 Name Type 2010 06 14 File Folder UFTPData File Folder Make Fold A an PREEN i SFTPLogs File Folder ea Publish this Folder to the Logs Pileealder nen AML E t gat Share this Folder iai File and Folder Tasks G TIS_device xml Fig 34 Under Windows 7 8 10 or Vista C Users username My Documents SKYWATCH a 1 p Computer OS C Users e My Documents Skywatch Organize Include in library Share with Burn New folder UY Favorites Desktop BE Downloads 3 Recent Places wal Libraries Documents al Music Pictures z Videos EA Homegroup jE Computer ca BIG VOLUME E cow DATAPARTL 0 i 05 C ti Network Name ao 2010 04 26 di 2010 05 01 db 2010 05 03 do 2010 05 04 do 2010 05 07 di 2010 05 08 d 2010 05 09 do 2010 05 10 ai 2010 05 23 gt 2010 05 24 aD 2010 05 28 i 2010 06 03 do 2010 06 11 Db Avi dO DarkFrames J FTPData doi FTPLogs do HotpixelsLists i Logs Date modified 02 05 2010 05 57 04 05 05 2010 04 25 05 2020 04 24 05 2010 05 51 05 2010 01 30 15 og 10 11 0 24 25 n 29y aT Wey 307 0472010 16 03 f05 2010 05 06 2010 04 12 2010 00 39 2010 01 05 5 2010 00 59 2010 19 39 2010 05 23 06 2010 19 34 472012. Filter_N 350 Changing filter is not allowed during exposures or while CCD camera readout Fig 25 The Iris tab allows to set the F ratio of the lens as required During night it is advised to open it to the maximum aperture i e F2 8 and during the day it can be set to any other figure Alcor system 21 IRIS Setting F238 MFS 0 AF9 AFi F56 F10 373 5 F653 Fi Fai Fag OF amp Fi4 Fig 26 The Focus tab is meant to change focus on the fly and see if the image quality improves Reference to zero allows the system to reset focusing because this is not an absolute focusing system but a relative encoder from a position The maximum focus range is from 0 to 1800 encoder s steps If you want to save the new figure please go back to the filter wheel tab a e m o E a eE meoo o e o e a a Iris Filter Wheel Focus Position to Reach Abs Enc Steps Apply Reference to zero Fig 27 3 2 General Software Setup The get it please check the next menu Alcor system 22 amp SRYWATCH Version 2 0 0 build 79 15 05 2015 Super user Mod File Options Misc Zoom Camera Setup General Software Setup Dome Heating control CCD cooling Focusing Filter wheel and Iris Control GPS setup Primary web posting site setup Secondary web posting site setup Fig 28 Set up your geographic place this is important It is
3. Force Y scale into this interval Min on FE 5 0 Maron PE 400 Apply Save S 2 8 Of RH plot settings o0 Y Force r scale into this interval Min ony ZRH 0 0 Maron 1000 App Save 3 2 C Outdoor humidity i intemal humidity Heating Co Auto mode Cy R SS Temperature FAH Control setup lot upload CCD cooling i Humidity 70 Eo 65 IT Pum iF 50 35 40 25 20 15 l 10 ei So So a Le SS a So m oS ame D Ly ci bn a Wo D uy co Ep a uy E Lir i o z cy m T a F re e D Po Pa F F Poe Poe Pa P Poe Poe F Time l Euda Euda 15 05 2015 16 49 51 26 20 WRH Amt of points 9023 displayed 132 interp 1 J mm ES a Fig 19 The inner camera relative humidity shall never be above 60 otherwise dew may form in the inner side of the dome and this jeopardizing image quality On delivery the camera inner humidity can be very low less than 5 because of desiccant presence inside the camera The control setup tab allows to setup threshold temperature and humidity to allow dome heating to be turned on or off Alcor system 17 Temperature RH Control setup Plot upload CCD cooling Temperature humidity auto params Temperature threshold C Humidity threshold AH Power Mas 2 Log activity 2015 05 15 2015 05 15 2015 05 15 2015 05 15 2015 05 15 2015 05 15 2015 05 15 2015 05 15 2015 05 15 2015 05 15 2015
4. Hot peltier temperature side CCD Temperature L Lih 6h 12h 24h 3s 4s Lih Lem Maron E 400 Apply Save Maxon 1000 App Save Control setup Plot upload cep cooling Temperature C a D 0 E a3 EL E re 6 4 9 6 12 8 16 19 2 ora 25E a co La ei co mm So a So a am oo So Di La La La am La a La a La a ci uci m ini an Tp Lr un mm Fa Wo Wo o 2 T E E E o a E T wy om i0 P P Po F P P Poe Poe P Po Poe Time Eudal Euda 15 05 2015 16 43 36 1 27 C Amt of points 9022 displayed 135 interp 1 E EE Fig 18 Top left shows outdoor temperature and humidity Those figures will trigger the dome heating Also the temperature of the CCD hot dissipater plate behind the CCD and inner camera are reported When the violet curve goes up vertical red arrow it means that the dome heating has been enabled and stay down when the dome heating is disabled The humidity tab shows the outdoor relative humidity level and inner camera relative humidity This is not the humidity that sees the CCD the CCD is enclosed into a very tight chamber Alcor system 16 l DISCONNECT COM R5232 pot number 21 Z Perform RS232 link upon form show Hide Close Dutdoor temperature humidity updt 30s Flots l eF V Lock plots on axis wis th 6h JER Ban ER E i eM 5 E oO C Plot temperature settings V
5. Options Misc Zoom Camera Setup General Software Setup Dome Heating control CCD cooling Focusing Filter wheel and Iris Control GPS setup Primary web posting site setup Secondary web posting site setup Fig 15 The Serial RS232 COM port must be set to the right value depending on your system s settings and click Connect If the RS232 link is not working camera focus and iris control will not be possible and camera will provide blurred images CONNECT COM AS232 port number 29 P V Perform AS232 link upon form show Hide Close Fig 16 If an error occur not cable tied or wrongly set port COM this message will be displayed Cannot get data from camera Buffer read error read 0 bytes s expected bytes s gt order REQ ORDER_VERSION check cables Fig 17 Otherwise the window expand and information is displayed as follows Alcor system 15 DISCONNECT COM AS232 port number a Outdoor temperatures humidity updt 30s 5 9 C E 82 9 3 2 C Heating Co Auto mode Cy Temperature A RH if Perform AS232 link upon form show c 2 Plots Z Lock plots on 2 axis Plot temperature settings V Force scale into this interval Minoon PC 5 0 RH plot settings Wf Force r scale into this interval Min onr RA 0 0 Outdoor temperature Heater enabled E Dew point temperature Intemal camera temperature
6. and must be entered in the panel from figure Fig 59 Reference pixel signal field It is advisable to use image processing software such as Prism or equivalent At the time of reference image acquisition during night using a sky meter measuring device such as Sentinel or SkyQualityMeter Unihedron the magnitude per square second will be retrieved and entered as a reference Reference Magnitude per arcsec The coefficients A 0358 and B 0 004045 are specific to the camera law gain and might remain at their default values above but can be re calibrated in laboratory for a specific camera Once the calibration parameters known the software calculates the magnitudes map per square second from the last image grabbed from the camera Median filtering is performed to remove most of the stars The image pixels are expressed in magnitude per square second a false color palette is applied and a color scale indicates the color to magnitude correlation Fig 60 Map of the sky expressed as magnitudes per arcsec square with false colors 3 9 Telescope control software link Alcor system 42 Telescope s pointing direction can be display and embedded to the last all Sky Image The telescope pointing software shall be able to generate a simple text file containing date and time of the measured position and equinox 2000 RA DEC coming from the telescope current position Fig 61 Current telescope position merged to the
7. the dark frame correction is not performed because negligible dark level If no file cannot be found inside this DarkFrames folder if the image file does not have the same size in width or height or if not the same pixels type a message error will be displayed in the status tab of the control panel This dark frame subtraction is performed through an optimization algorithm of the coefficient to be applied to the master dark frame image If many files are present the software will select the master dark frame that provides a result that is closest to 1 0 Processings S Mirror Y Mirror Color image From Bayer array 4 Hot pixel removal Show Fixed hot pixels F Automatic hot pixels removal Maximum gap with neighboring pixels ADU Maximum stdey with neighboring pixels ADU Show fixed hot pixels Fig 40 The software scans the presence of files in the DarkFrames folder and will automatically pick up the most appropriate file This means that if the master dark frame was produced at a given temperature a given exposure time and a given gain the software is able to optimize the subtraction of the current image by the best dark frame even if there was temperature changes This is performed within a reasonable range of variation It will be discussed later on the effects and validity of the dark master frame according to the variation of parameters As there are still hot pixels that have non linear behavior and can
8. 05 15 2015 05 15 2015 05 15 2015 05 15 2015 05 15 2015 05 15 2015 05 15 Update into camera Controls If temperature is below Ts and relative humidity 7 Auto Mode Heating 11 0 Ta Is above AHs then dome heating will start automatically when auto checkbow i checked Only during Hightime Sun set and rise fa Als Force heating If temperature is above Ts 2 C ans relative 40 EERI humidity is below AHs 522 then heating will Humidity detector adjustements shop Gain ADU 65535 150 00000 Resistance Ohms 4 Voltage W 12 Offset ADU 65535 015150 Poll system each sec 232r 05 168 23 20 25 170 23 20 55 093 23 29 25 330 23 29 25 463 23 29 25 620 23 29 55 350 2329 55 394 23 2J 09990 23 30 25 364 2330 25 374 23 30 25 534 23 30 55 380 23 30 55 385 2330 55 428 23 31 25 202 23 31 55 256 GetData gt 6 6 C 2443 904 6894 heater enabled 1 Autoheater 1 Power 40 GetData gt 6 6 C 2244r 904 E880 heater enabled 1 Autoheater 1 Power 40 GetData gt 68C 2247 902 6879 heater enabled 1 Autoheater 1 Power 40 Buffer read error read 0 bytes s expected 2 bytes s order REG_GET_VOLTAGE COM Esception gt Buffer read error read 0 bytes s expected 2 bytes s gt order REQ_GET_VOLTAGE GetData gt 6 77C 2238 90 6889 heater enabled Autoheater 1 Power 402 Buffer read error read 0 bytes expected 2 bytes s gt order REG _GET_YOLTAGE COM Exception gt Buffer
9. AUTOMATIC cooling only Nightime Cooling ts solely enabled only when the SUN is below 7 of elevation Curent temperature L 15 1 Temperature to reach E 15 Apply current setpoint value 15 0 C Power 0 mean 42 5 4 Fig 23 The Focusing iris and Filter wheel control can be accessed this way Alcor system 20 SKYWATCH Version 2 0 0 build 79 15 05 File Options Misc Zoom Camera Setup General Software Setup Dome Heating control CCD cooling Focusing Filter wheel and Iris Control GPS setup Primary web posting site setup Secondary web posting site setup Fig 24 Go to the Filter Wheel tab and define the amount of focuser step for each filter This information is provided by ALCOR SYSTEM but you can refine it if desired Warning if serial R5232 COM port is not defined properly the panel will not show up and no iris and focus control are possible The COM port is set by the panel displayed when Options Dome Heating control CCD cooling is selected The filter wheel tab allows to change filter and refocus accordingly because filters may have not the same thickness and camera must be refocused The series of number 1275 1275 1275 1300 and 350 steps to refocus after filter changes is provided by ALCOR SYSTEM Iris Filter Wheel Focus Focuser Pos Enc Steps 1275 Filter _R 1275 Filter _G 12775 Filter B 1300
10. GXCAM_EN_64 exe or the GXCAM_EN_32 exe according to your system 32 or 64 bits Accept all modifications to your system Do not disconnect the camera during this phase MI G 2 G3 G4 USB 2 0 CCD Camera Ev Device driver software installed successfully Fig 8 After camera driver is installed into the device manager the yellow exclamation point will disappear and provides the actual name of the camera Alcor system 10 File Action View Help m H m gt E System devices i F Universal Serial Bus controllers be Fresco Logic xHCI USB3 Controller FL1100 Series Fresco Logic xHCI USB3 Hub Fresco Logic xHCI USB3 Root Hub Generic USB Hub Generic USB Hub Intel R USB 3 0 eXtensible Host Controller Intel R USB 3 0 Root Hu Standard Enhanced PCI to USB Host Controller Standard Enhanced PCI to USB Host Controller USB 2 0 Hub USB 2 0 Hub USB 2 0 Hub USB 2 0 Hub USB 2 0 MTT Hub USB 2 0 MTT Hub USB 3 0 Hub USB Composite Device USB Composite Device USB Mass Storage Device USB Mass Storage Device USB Root Hub USB Root Hub dak WSD Print Provider Fig 9 Windows Device Manager once the camera driver is installed and loaded properly 2 2 Installing the camera Software 2 4 Installing the camera control software The software must be downloaded here http www alcor system com common allSky sw setup skywatch exe This is the software used to control the camera click on setup exe The dot NET 3
11. background mamn File Action View Help m H mE b Sq Imaging devices A a E Intel WiUSB Po USB IF xHCI USB Host Controller gt lt 2 Keyboards i Mice and other pointing devices b LX Monitors b KE Network adapters ib Other devices ik Unknown device Ga Print queues b E Processors b Software devices ral Sound video and game controllers p gt Storage controllers b jl System devices F Universal Serial Bus controllers Generic USB Hub Generic USB Hub Generic USB Hub Generic USB Hub Fig 6 Lists of Windows devices If your system is 64 bit PC the driver must be downloaded here http www alcor system com common allSky sw GXCam EN 64 exe If your system is 32 bit PC the driver must be downloaded here http www alcor system com common allSky sw GXCam EN 32 exe Alcor system Home Share View facut i Fr FA New item s Open Select all Ld lt is Pe z Wal Copy path i l a Easy access Y A Edit oo Select none Paste a Move Copy Delete Rename New Properties izj Faste shortcut to to folder Clipboard Organize New Open Select l History 7 Invert selection D Fi ThisPC Local Disk C Users cavadore Downloads Search Downloads W Favorites Date modified E Desktop 5 15 2015 5 43 AM Downloads GXCam_EN_32 exe 5715 20155 43AM_ Application 4018 KB 23 items Fig 7 USB camera driver files Once downloaded start the
12. pixel of 18x18 pixel bow is repaired If H is displayed this means that the hot pixel file was not found The L 9x9 indicates an automatic correction of hot pixels having an average density of 1 pixel per 9 by 9 pixels TU 07 04 2011 19 59 19 Fig 51 DF 414002 AS 53900043 TU 07 04011 20 14 12 Fig 52 3 6 Setting the overlay grid The camera must be installed vertically using a water bubble level Otherwise the setting of this grid will be difficult and will not match actual image Here is the recommended way to set the grid that is used to identify stars on the image this is not an automatic procedure this setting shall be performed manually But once set this will be set forever expect the camera is being moved or rotated In the Control Panel set the location latitude and longitude Alcor system 37 altitude and the country Image Folder recording Base folder Change CUsers PC Documentsiskywatchi 4 new Folder is created at noon each day AYI builder m Enables vID compressed AVI file creation Last 3 hours Pre creatin Bacri i mil 1 Gr F Aei AYI File creationfrom previous AVI file scale 3 100 Frames per sec Fos 10 Setup codec About htkpi trenan vid ot Sky Sun elevation as dawnfdusk 7 12 0 Acquisitions control a Minimum time interval between exposures sec 60 GA V Minimize time interval between exposure while night ex
13. read error read 0 bytes s expected 2 bytes s gt order REQ_GET_WOLTAGE GetD ata 6 C 22445 904 6894 heater enabled 1 Autoheater 1 Power 40 Buffer read error read 0 bytes s expected 2 bytes s border REG GET VOLTAGE COM Exception gt Buffer read error read 0 bytes s expected 2 bytes s order RED GET VOLTAGE GetData gt 6 6 C 2250 902 E885 heater enabled Autoheater 1 Power 402 Buffer read error read 0 bytes s expected 2 bytes s order REQ_GET_ OLTAGE COM Esception gt Buffer read error read 0 bytes s expected 2 bytes s gt order REQ_GET_VOLTAGE GetData gt B C 2251 90 6881 heater enabled 7 Autoheater Power 402 GetData gt 6 6 C 2247 90 E864 heater enabled 7 Autoheater 1 Power 402 GetData gt 6 6 C 2254 904 6879 heater enabled 1 Autoheater 1 Power 40 Fig 20 Apply mW Do not have the dome heating working all the time during the day for instance this is not very useful and advised this can wear out the o ring sealing quicker than expected The heating of the sphere is achieved throughout a set of resistors placed under the sphere base It can defog or defrost the outside side of the acrylic sohere The inner side shall not have dew please refer to the inner humidity sensor figure The system is autonomous works without link to PC and without user s supervision It sets out the conditions when temperature and humidity levels enable o
14. the key pin inside the camera connector and the key at the connector cord side e Apply a rectilinear motion If insertion force strength persists please repeat steps for locating the pin number and key Excessive force applied to connector can cause the destruction of the connector or a bad connection can damage the camera In case of damage due to trials to attach cable to the wrong connector kind warranty could be canceled Fig 2 Key one of the three connectors power connector Alcor system Fig 4 Then turn the connector s collar in clockwise fashion 1 2 Camera optical settings Alcor system The angle adjustment tilt of the camera lens with respect to the CCD plane is factory made It is not possible to perform changes from outside for tightness reasons The camera iris and focus position is controlled by external software as well as the 5 position filter wheel and camera So this is required to run the Skywatch exe to gain access to these settings 1 2 1 Temperature sensor and humidity connector 1 It is a 5 pin connector The probe located at the end of the cord will be placed preferably in the shade as far as possible from the camera and always with two set 4mm screws with the direction given in the next frame and horizontally It put upside down this can destroy the sensor and warranty will not apply Fig 5 up down and horizontal temperature sensor and humidity directions for installation 1 2
15. 0 02 36 25 04 2010 09 45 T ffi 05 2010 00 23 m 02 04 2010 19 15 02 05 2010 05 05 Type File folder File folder File folder File folder File folder File folder File folder File folder File folder File folder File folder Fite folder File folder File folder File folder File folder File folder File folder File folder Fig 35 The subdirectory AVI contains the latest videos generated by the camera control software e The subdirectory darkframes contains the images needed for camera hot pixels removal All CPA files found there are tried by the software to find the best dark frame to be used to remove camera hot pixels The subdirectory FTPData contains the final JPEG image produced to be uploaded on user s website Alcor system 28 e The subdirectory FTPLog contains the log files generated for each image transfer to the website These logs help to find out issues when transferring files to user s website e The subdirectory HotpixelsList contains the hotpixlist cos file used to make hot pixel corrections that were not removed by the subtraction of the optimized dark master frame Hotpixlist cos this is an ASCII file where each line describes the correction to be made to a given X Y pixel For instance fill 103 360 fill 289 570 fill BOA 125 fill 664 326 PR PR The first line indicates that the pixel located at X 103 and Y 12 and a single pixel size shall be corrected by its
16. 0 platform is required if this is missing to your system please get it here http www microsoft com download en details aspx displaylang en amp id 31 Alcor system 11 Installation is quick and trivial Please accept all installation modules also XVID encoder that will allow you to create time lapses The software creates an icon to your desktop We must double click it to start the camera control software Fig 10 Also SIPS software can be used to control the camera and the filter wheel but this is a basic test software and has not all the features for all sky cameras that has Skywatch The focus and iris control is not possible with this software Nevertheless it can be useful to debug camera link http www alcor system com common allSky sw SIPS EN 32 bit exe http www alcor system com common allSky sw SIPS EN 64 bit exe 3 Using the camera software control This software is fairly intuitive the documentation will focus on features that are considered difficult to use and about the startup procedure Access to the menu bar is located in the upper left and a flying window in the foreground can quickly adjust the software settings 3 1 Initializing This is an important section please follow it By default the software sets to simulation camera and this has to be changed to the proper camera Click Camera Setup Alcor system 12 7 TA s i ANATCH Versa i SPP eE i Camera Setup Gene
17. 2 Power connector and RS232 2 This is providing power to the camera and RS232 link The RS232 connector is a DB9 connector type female and attaches to the serial port of the PC New PCs are not equipped with serial port and must be equipped either e By a RS232 USB converter very moderate cost FTDI ATEN devices avoid Prolific there are not reliable e By RS232 PCI card Low cost device not suitable for laptops Alcor system e By Serial to Ethernet MOXA devices very reliable and professional device http www moxa com product nport device server 1 htm Product type is Nport The RS232 control link is mandatory and must be connected to your PC This gives access to e dome heating control temperature and humidity thresholds that will turn on and off the dome heating e setting the heat power to be applied to the dome e reading temperature of different sensors inside and outside camera e reading relative humidity sensors from inside and outside the camera e controlling the lens focus position and iris from f2 8 to f22 and the good focus position is set by Skywatch software on startup otherwise blurry images will be obtained So this is a mandatory control way for the camera Please connect the RS232 link to your PC 1 2 3 USB connector 3 This is tied up to a 6 pin connector Please always connect the camera first and then connect to PC second with camera turned off Power the camera once the USB connecti
18. AVI file creation using XVID software or other codec Create and write AVI fle c5 Save image file as FITS and not CPA each min Image Add comment to image None leave empty box F Enable AVI fle creation that gathers previous night images Open file folder AVI file scale 6 Weather station link Frames per sec fps 10 Cloud sensor device type htto E J leatas orgi C Boltwood CloudSensor I AAG CloudWatcher or Sentinel Shelyak Sky 0 Boltwood CloudSensor II or Sentinel Shelyak Sun altitude for night time 3 5 0 C Currdat st file Lacrosse weather station Oe Fig 36 e The subdirectory Year_month_Day contains image files that are saved automatically by the software as jpegs files or CPA FITS files The directory is used from noon to noon For instance images created from 12 00 on May 10th 2010 till May 11th 2010 at 11 59 will all be stored inside 2010 05 10 subdirectory 3 5 Image hot pixel removal using dark frame image The camera embeds in this system a system to cool down the camera sensor so following this procedure in this paragraph is not mandatory Production of hot pixels depends mainly on the temperature of the CCD camera that is bound to external temperature More the camera is being used under conditions of high temperatures more the amount of hot pixels Exposure time also affects strongly the amount of hot pixels the higher the exposure time the higher the number of
19. D compressed AI File creation Last 3 hours fe Acquisitions control Ca Minimum time interval between exposures sec 60o S J Minimize time interval between exposure while night exposures Change camera auto white balance mode day night Mode Automatic during day 3 Automatic during night Misc Enable Log file writing on disk LOG F Display real time telescope position Generated File by PRISM File path C iUsersiPCDocumentsiskywatchilast_ti are F Save images as FITS and not CPA Misc Write comment on image nane do not Fill the next box OHF camera Show image File Folder Weather station link Biore Boltwood Cloudsensor 1 AAG Cloud atcher or Sentinel Shelyak py Enable AYI file creationfrom previous might AVI file scale 100 Frames per sec fos 10 Boltwood CloudSensor I or Sentinel Shelyak Setup codec About t http jie seid orgi E Currdat lst File from Lacrosse weather stations Output File that will be read on regular basis Sky Full output File path Sun elevation as dawniduskf 12 0 asl Ok Cancel Fig 56 Group of information to provide to connect with cloud sensor system control software Alcor system 40 RH 50 Overcast Why ji 0 0 kmh Fig 57 List of information coming from Sentinel or Boltwood cloud sensor included in the image 3 8 Magnitude per square second display image mode The software allows
20. EUDA All Sky Camera Installation and user manual April 27th 2015 revision ALCOR SYSTEM Alcor system 1 5 Table of Contents CANIS Fea INS Cal t LOM Satiioeactaevewheedavastac cete obd davveid daxicsmacon T aecanvenecensinsnadeeesieac N EO E 3 1 1 DV SECM GAN AIO Niece tantesectaee cotta a erat nrea taste cade a eatin eee cacet E nee oseenecoe mae 3 1 2 Calne harOptlealSOtuine Sore E T A T 6 1 2 1 Temperature sensor and humidity connector 1 cscccccssssssssecsscnssesscsscnssssecsscnssssecsecnsessesseonsssesees 7 1 2 2 POWErCONMECLOP and RS232 H2 hernia a EE E E E O AN 7 1 2 3 USB CONNECTOR nena E a a teu 8 SONWALE cenai a a T TA TE E A sav eae amNmnrOTaES 9 2 1 Camera driver installation SOTtWare enirar E AE 9 2 2 Istalin the Camelia SOWIE nsee e A A E E E E AAN 11 Using The Canela software Control sensesorinen inaa aa a a a a aan te dareaidaees 12 3 1 Halme sce a a 12 3 1 Coole the COD aaa a a a a met Ratndenedteddtedeor ctmeseeuteaeds 19 3 2 General SOnt Wal C SOUUO oeni a 22 3 3 Camera Cono AINE hienn aaa a A S a 24 3 4 Storage of files produced by the camera control software esssssssssessssressrrsssrneerresereesrrrsrreserresrersrreserrrereess 27 3 5 Image hot pixel removal using dark frame IMAE csecccccsseccccesseccceesececceecceseusececseeceesugeceesauecesseeceeseees 30 3 5 4 Achievine master dark rane soreness a cat aaa a a a a 33 3 5 2 Residual NOCD KETEDI TR ana sccder ve
21. ccurrence of water condensation As soon as the temperature is below a certain value and moisture above another value the heating system is automatically activated These levels are named temperature and humidity levels By default factory set the default threshold temperature is set to 7 C and humidity level to 90 These thresholds may be inappropriate for a given site and can be adjusted by user input Similarly the heating power is set by default to 50 duty cycle it can be changed according to site and circumstances Beware if this window is closed recording data cannot occur anymore We recommend that you simply hide it Nevertheless dome heater activation is achieved by the camera alone without any link to the PC Finally it is possible to transfer these plots to website for remote checking Alcor system 18 Alcor system Uzer account Host or IP address ftp astrosurf com User login cayadore Password Titty Remote folder ree meteo curent Humidity FAH z Update intervall Minutes BU Force FTP update Enable image posting using FTP Fig 21 Website setting for temperature and humidity plot posting 3 1 Cooling the CCD The CCD of this camera can be cooled The benefit is noise reduction and no hot pixels anymore This is not necessary to cool down the camera during the day because exposure time is short enough to avoid any hot pixels and noise increase so do not cool dow
22. des fle save Normal nate Darks frame recording mode Do median stack of 7 Disabled Fig 30 Alcor system 25 Control panel 7 The system status provides useful information of the camera System status Camera eee Dis l Exposure status when the AVI file is going to be generated and Camera status other information is displayed Exposure pending 75 AVI builder Startup within 47 6 minute s The Focus Iris Filter group box is also visible provided the Ephemerids camera serial link is connected and the proper COM port being UT time 15 05 2015 22 06 33 set Sid time 13h57m13s Sun Alt 22 204 Day 6 0 UT 03 31 07 in 05 24 33 ec Moon alt 36 75 Rise UT 03 17 08 in 05 10 35 Post processing darks No dark substraction enabled Hot pixel fist No hot pixel correction enabled Auto hot pixels No automatic hot pixel removal FTP status Ftp disabled CloudSensor Sentinel No active link Focus Iris Filter Focus pos 1275 Iris F28 Filter Filter _L Fig 31 If Automatic exposure time is checked and Circular fisheye is chosen the computation area refers to the circle that is defined into the display tab in the camera control panel To see how this fisheye circle is defined enable the grid display and set the circle position center and radius so that it matches the image returned by the camera The automatic exposure time will use the inner circle a
23. ecleteacgatan ttetloi E A 36 3 6 See NE OV hla EA a a a S 37 3 7 Cyanogen Boldwood or Sentinel cloud sensors link with camera control software eessseresreesrrrsrrreeree 40 3 8 Magnitude per square second display image MOAE cccccssssccccesseccceesececeesecceeeesececsueceeeeeeceeseusecesseecesseees 41 3 9 Tel sc pe controlsonWware INK esere E E E 42 Cine Fae AL CN ING smeri herie e a a a a 45 4 1 NT 0 La am CEINE aa eRe EE rere ey a Tee eee eer ee 45 Product terms On WIS 25 205 cee pista tassios aduntcsbnd iowa anhivte oomareaite eaorees omens causa ced sataanteis chase noauaan ate aene omaweamenoeres 46 Alcor system 2 1 Camera installation 1 1 System installation The camera works outdoor it is totally weather tight The camera has mechanical shutter and a 5 positions filter wheel The focusing of the camera can be achieved by software remotely so there is no need to open the camera to achieve focusing The CCD is has 8 3 million pixel of 5 4 um and can be cooled down The Iris can be set from f2 8 to f22 by means of software also Lens focal length is 4 5 mm The heat from the Sun does not cause daytime stops operation of the camera Please do not install the camera near a pollution source like a chimney Give as much exposure as possible and avoid obstacles This version of camera has heater that can remove external condensation that can occur on sphere surface The camera has three anchors on the back these
24. el is considered as potential hot pixel When the two above conditions are met the hot pixel is fixed automatically Auto hot pixels Hot pixel density Fixed auto 69x69 Fig 49 The figure above shows that the automatic correction is performed on average into one pixel every 69x69 pixel box To test this feature use a moonless night and be careful not to remove some stars of the picture by setting a too low maximum gap and too high standard deviation You can see how these fixed pixels are spread over the image by enabling the following checkbox Alcor system 36 Processings amp Mirror OY Mirror Color image from Bayer array a a Remove dark Frame v Hot pixel removal Show Fixed hot pixels Automatic hot pixels removal Maximum gap with neighboring pixels ADU Maximum stdey with neighboring pixels 4DU A pixel density corrected that implies one pixel every 7x7 pixels box is maximum beyond this density such as one pixel each 5x5 pixel the image quality is highly jeopardized and master dark frame and the list of hot pixels bound to it must be achieved 3 5 Status information In JPEG image a cartridges are indicating camera statuses 2129 indicates the number of images taken since the software has been started up D 1 6 indicates a correction by a factor 1 6 of the dark frame H indicates hot pixel correction using a list for example 18x18 H indicates that an average of one
25. for window cleaning The 8 screws can be removed to detach the sphere from the rest of the camera Attention must be paid on these topics e The cable bringing power to the heaters should not be pinched during reassembly e O rings properly positioned in their grooves e The distance between the sphere support and the camera body must be at least 3 mm and constant around the perimeter e 8 screws must be put together with their washer and all tightened the same way Incorrect reassembly can cause loss of sealing allowing rain to enter and de facto guarantees no longer apply If you feel confident with dismounting sphere please do not do it Alcor system 45 5 Product terms of use The use of this product is solely for monitoring the sky night and day entertaining educational or scientific purposes Use of this product involving people s lives is the responsibility of the user and in no way ALCOR SYSTEM will be held liable for injuries to persons or property theft as the use of this camera described in this manual 000 Alcor system 46
26. hot pixels Alcor system 30 The following series of images is quite demonstrative in case of a black and white camera the pixels are white hot and occupy a single pixel It is possible to confuse them with stars but their existence in areas without light reflects an important problem of image quality It is therefore essential to correct these hot pixels using an dark master frame and possibly complete the task with a list of pixels to fix Stale t Fig 37 Without correction of dark and hot pixels With correction of dark and hot pixels The software performs hot pixels fixing in three ways By subtracting a master dark frame Local pixel correction from a list of hot pixels Automatic local hot pixel removal based on two parameters Activation of these corrections is achieved using the main camera control panel camera tab then on the following checkboxes Remove dark frame Hot pixel removal based on pixel list coordinates or and Automatic hot pixel removal The master dark frame is located in this folder and can be a CPA or a FITS file later the software can produce these file for you Alcor system 31 fr C Data Users 10118128 Skywatch DarkFrames Fie Edit wiew Favorites Tools Help pack ki gt Bi a Search gt Folders ce bt x ie m Address C C Datallsers 101191238 SkywatchiDarkFrames Date Modified 748KB Fichier PRISM CPA 2706 2010 23 53 Fig 39 During day
27. last all Sky image If the time gap between the current date and the date of the last telescope position is greater than 10s the telescope s cross position switches to red color indicating that the position is no longer refreshed by the software and thus might not be valid Fig 62 Telescope position as red because current date and telescope position date is larger than 10s Here is the file format used to read telescope position as ASCII file 1 line is amount of days since Dec 31 1899 at 12 o clock the second line is RA as radian the third line is DEC as radian a0 S01 aS I IO eLeUaG 4 3461698620 Us2SS977 7407 UTTime 09 05 2010 11 30 44 p m RA2000 16h36m04 126s DEC2000 54 39 32 03 The other remaining lines are not read and are just provided for information Alcor system 43 Alcor system Telescope parameter to display position over image Telescope s name File path on disk 36 F8 user Mr Smith c temp lposi tet 20 F6 user Mr John ci temp pos2 tat Tel n 3 Tel n 4 Tel n 5 Tel n 6 Fig 63 Telescope s names can be set in this form 44 4 Camera maintenance 4 1 Sphere cleaning Sphere cleaning must be achieved on regular basis Rains can bring dust that is deposited on the sphere surface it reduces the optical transmission and image quality The acrylic sohere outer and inner surface can be cleaned with water then with a Kleenex moistened with washer fluid dedicated
28. meant to compute Sun set and Sun rise and other astronomical parameters In the Image grab control group box the filter for day operation must be set to neutral filter and during the night to a different filter L R G or B and F ratio Recording images during the day with L filter is not possible the camera exposure time 250ms does not allow this So another filter or neutral filter can be used Alcor system 23 Place MyObs Latitude 45 31 Oo North oT i oo 5 J East Longitude 4 Altitude m 0 Country France Image recording Base folder A new folder is anea atnoon every day AVI file generation wi Enable AVI fle creation using XVID codec Create and write AVI file a each min C Enable AVI fle creation that gathers previous night images AVI file scale 4 Frames per sec fps 10 m nihii matte Sky Sun altitude for night time 9 6 0 Camera Control panel Alcor system Image grab Minimum interval to apply between exposures sec 15 rr During night minimize pause time between exposures _ Change night day white balance computation mode Mode i i Restart camera _ Automatic by day automatically when link is Automatic by night last Prevent exposures duringday Sun altitudel 5 0 EUDA F During Day set to Neutral filter and set Iris to and during Night set filter to Misc Enable log file reporting all software activity LOG Real time telescope
29. n the camera during the day The cooling CCD tab lets you to setup CCD temperature to minimize hot pixels and dark current noise Cooling CCD at 10 C is sufficient and must be used only during the night where long exposures are achieved Maximum exposure to avoid star trailing is between 25 and 35sec The mean power of the CCD cooling must not exceed 60 of the power available for cooling During the day CCD cooling must be inactive This panel has all the features to allow automatically the CCD cooling to be inactive during the day During the night the temperature to reach can be entered by the user and during the day it is set to 30 C that will never be reached because the system cools the CCD and cannot warm it up The CCD temperature will be let to follow then inner environment camera temperature 19 Temperature AH Control setup Plot upload CLO cooling Information Hot side temperature 11 8 C Inner camera humidity 42 8 CCD Temperature 12 2 C EUDA camera temperature control Enable AUTOMATIC cooling only Nightime V Cooling is solely enabled only when the SUN is below 7 of elevation Current temperature C 12 2 C Temperature to reach E 9 0 Apply curent setpoint value 30 0 C Power 4 0 mean 0 0 Fig 22 Information Hot side temperature 21 3 C Inner camera humidity 38 8 CCD Temperature 1 5 1 C EUDA camera temperature control Enable
30. nd Y to adjust the position of the zenith symbol Fig 55 Star passing nearby zenith Deneb and zenith marker e Once the zenith marker found you have to set the north position to have the grid circle and star s name matching with star position The grid scale can be changed also The grid or set of stars position is changing according to the time and geographical coordinates Be sure to have set theses parameters correctly Alcor system 39 3 7 Cyanogen Boldwood or Sentinel cloud sensors link with camera control software If you own a cloud monitor from Cyanogen or Shelyak companies it is possible to display at the top right of the image some weather information In the main Setup Panel enter appropriate information The software uses simply the output file generated by each measurement from cloud sensor It does not use the COM or Activex interface Enter the path of the generated file provided by the software that runs the cloud sensor The amount of information depends on the system that is measuring cloud cover It will be the most complete using Sentinel Shelyak system wind direction and zenith magnitude per second squared Place Al biqneus m Latitude 45 320 15 IFlNorth 71 17 Wl East D Longitude 4 Altitude rr 553 Country France Image Folder recording Base folder Change CiUsersiPC Documents srywatch 4 new Folder is created at noon each day ANT builder Enables VI
31. neighbors pixels This correction takes into account that the image is a Bayer pattern array color camera and picks up neighbors pixels accordingly This file can be automatically generated from a feature from this software see next paragraph e The ogs files subdirectory contains the log files of the software in which are written the software actions and events as a text file This is for debugging purposes A new file is created each time you start up the camera control software The log file is enabled into the main s software setup panel Just enable it in case of issues because log file can make large files Alcor system 29 amp Set Ip i Image grab control Place MyObs sain Minimum interval to apply between exposures sec 15 r D I E Latitude 49 31 20 North During night minimize pause time between exposures Longitude 4 Sar lp V East Change nightiday white balance computation mode Mode 3 Restart camera Altitude m 0 Automatic by day E automatically when link is paneliy A i Automatic by night lost J T z gi Image recording ee exposures during day Sun alttudel 5 0 Base folder During Day set to Neutral filter and set Iris to C Users cavadore Documents skywatch 20d during Night set filter to Filter Rami Anew folder is created at noon every day AVI file generation Real time telescope position Ascii file created by PRISM wi Enable
32. not be corrected by the dark master frame correction using hot pixels list can be achieved cleaning the image of hot pixels by its neighbors Just check the box highlighted in the screenshot below Alcor system 32 Processings E amp Mirror E Y Mirror Color image From Bayer array 4 Remove dark frame pe fa a pixels F Automatic hot pixels removal Maximum gap with neighboring pixels ADU Maximum stdey with 35 neighboring pixels ADU Show fixed hot pixels E Fig 41 The file used for this operation can be found here C Data Users 101181285Skywatch HotpixelsLists File Edit View Favorites Tools Help J Back gt Bi se Search Folders a tt x if Address C C DatalUsers 101 19128 Skywatch HotpixelsLists T hotpixlisk cos SSKB COS File Fig 42 This is a text file contains a list of hot pixels to repair fix 3 5 1 Achieving master dark frame The files located into DarkFrames folder whose fundamental purpose has been presented above may in some cases no longer be adapted to the current image shooting conditions due to seasonal temperature changes This is especially the temperature change that will determine the validity of the master dark frame This validity is above below 5 C the temperature where the master dark frame has been recorded Beyond this temperature range the image hot pixel repair removal using this dark frame might become poor and not effective For exam
33. on is tied both sides The cable that goes to the PC is 20m length and is amplified Connect USB directly to the PC not thru hub The USB camera is very sensitive and does not allows USB ports that reports issues or been wear off by years of usage Please be sure to have installed the latest USB chipset software for your motherboard Do not put other devices on the same USB hub that requires some current If the camera is not recognized by the PC try another USB port Despite the camera is USB 2 0 USB 3 0 PCI extra board can be used and since they are very well powered most of the time they work more nicely and more reliably than embedded motherboard USB controllers This is an important step otherwise the PC can download images for some hours and then will not anymore because of the USB link being not reliable Alcor System has a long experience connecting USB devices using a 20m extender and when it fails it is always due to PC issues with USB chipset drivers USB hub badly powered USB port been jeopardized by several Electro Static Discharge ESD Alcor system 8 2 Software Installation process has two parts 1 Camera USB driver 2 ALCOR SYSTEM camera software suite Skywatch Xvid encoder 2 1 Camera driver installation software Connect the camera to the USB port of your PC where it needs to work with In the Windows device Manager form the camera should appear with an icon tagged exclamation point on a yellow
34. oval Show Fixed hot pixels Operating modes file save Normal mode F Do median stack of 7 Disabled Fig 44 The software switches into a particular mode that allows it to produce dark frames and performs the median stack when the amount a required dark frames have been reached in order to achieve a dark master frame and a list of hot pixels Alcor system 34 Operating modes file save Operating modes Normalmode Normal mode Darks Frame recording mode Darks Frame recor ding mode a M Do median stackof 11 darks Do median stackof 11 darks Validated images 3 11 OK completed Fig 45 The resulting files are placed in the proper directories and are immediately ready for use Once the task is complete click on Normal mode Enable the following features by checking the following boxes Processing x Mirror Y Mirror Color image From Bayer array 4 Show Fixed hot pixels MW Automatic hot pixels removal Maximum gap with 25 neighboring pixels ADU Maximum stdey with 35 neighboring pixels 400 Show Fixed hot pixels Fig 46 For each image recorded by the camera the dark master frame file will be used in the form Displayed_image Raw_Image_brute k Master_dark_frame_Image Where k is a coefficient optimized by the software More k is close to 1 the better In the following scenario k 0 95 which is a good value Post processing darks Da
35. ple a master dark frame recorded from a set of some dark images at 20 C will be valid for images acquired between 15 C to 25 C It is better to build a small library of dark master for each 5 C outdoor temperature The software will automatically select the most appropriate in the DarkFrames folder How to make a master dark frame for a given outdoor temperature This is easy Under Camera tab uncheck Auto Exposure time and select an exposure time corresponding to the longest exposure time used during night for example 30s and then do Apply Alcor system 33 Camera 62 8300 Enable exposures settings Exp 5 25 Automatic exposure time Gain exp computation method 512x512 central area All image Circular fisheye Fig 43 Operate ONLY during night and cover the system the Plexiglas dome with a black tissue or black paper Be sure that any stray light cannot penetrate to the camera lens Warning it s a fisheye that is mounted on the top of the camera and it able to see 360 down to the horizon A feature has been implemented to achieve a master dark frame and also can compute a list of hot pixels too Press the Dark frame recording mode and check Do median stack of say 5 to 11 darks Processings amp Mirror Y Mirror Ga Color image from Bayer array 4 GA Remove dark frame Hot pixel removal Show Fixed hot pixels Automatic hot pixels rem
36. position Ascii fle created by PRISM software or other Save image file as FITS and not CPA Image Add comment to image None leave empty box Weather station link Cloud sensor device type i None Boltwood CloudSensor I AAG CloudWatcher or Sentinel Shelyak 5 Baltwood CloudSensor IT or Sentinel Shelyak Currdat st file Lacrosse weather station The control Panel is always visible on the right side of the screen 24 Control panel 11 E The camera tab is important e ra seul ah SA A Zoom Dist n Once the camera is selected the exposures start immediately Then Pl Gratis epo i do not forget to check the Auto Exposure box after the first image Settings has been displayed Here 25 sec of maximum allowable exposure has Exp max s 25 aii been set so that camera can acquire images during the night of the day with the proper filter The minimum exposure time is 0 25 sec M Automatic exposure time If the camera is cooled it is not necessary to check Remove dark Gainjexp computation method frame Hot pixels removal and Automatic hot pixels removal 9 512x512 central area gt All image Circular fisheye Exposure compensation EV 4 ai Processings E x Mirror E Y Mirror Color image from Bayer array 2 Remove dark frame Hot pixel removal Show fixed hot pixels Automatic hot pixels removal 50 15 Show fixed hot pixels Operating mo
37. posures Change camera auto white balance mode daysnight Mode Automatic during day Automatic during night Misc 4 Enable Log File writing on disk LOG F Display real time telescope position Generated file by PRISM File path CiUsersiPC Documentsiskywatchilast ti ne F Save images as FITS and not CPA Misc Write comment on image none do not Fill the next box OHP camera Show inage File Folder Weather station link Cloud sensor station type Li None C Boltwood CloudSensor I 446 CloudWatcher or Sentinel Shelyak Boltwood CloudSensor IT or Sentinel Shelyak i Currdat st File From Lacrosse weather stations Output File chat will be read on regular basis Full output File path amp CiUsersiPC Documents Sentinelbostt txt Ok Cancel Fig 53 e Use night time when a star of magnitude 0 to 3 passes to zenith or say 2 from the zenith e Force fixed exposure time of 5s to 10s e Get to Enable grid display and Show Main object Check Only horizon e Find the star that passes nearby zenith and move the cross indicating zenith towards it e Change X center and Y center figures so that the cross position matches with the star Alcor system 38 alin Astronomy Enable grid display only horizon RA DEC s Center pixels Y Center Y pixels Radius pixels S25 North position DETER B F Show main objects Fig 54 Displacement in X a
38. ral Software Setup Dome Heating control CCD cooling Focusing Filter wheel and Iris Control GPS setup Primary web posting site setup Secondary web posting site setup Fig 11 By default the software is set to simulation camera M MEADE DSI III camera TIS IMAGING SOURCE camera F OMEA cooled camera F EUDA v1 camera C EUDA v2 camera Camera parameters Bayer color array sensor Select EUDA V2 Camera Alcor system 13 F Simulation camera no physical camera F MEADE DSI III camera F TIS IMAGING SOURCE camera M OMEA cooled camera F BUDA v1 camera PAEUDA v camera Camera parameters Select among available camera s W G2 8300 G2KF8300 002367 Readout mode Setup 5 filters Fig 13 The G2 8300 camera must appear readout mode can be Low Noise slower readout or Preview for faster readout but provides more noise Then click the Setup 5 filters button Filters setup Filter Index Filters name Filter L Filter _A Filter_B Filter fy Kk 1 2 4 Filter a 4 5 Fig 14 Assign name of the filters to indexes according to your choice on purchase please contact Alcor Sytem in case of purchasing custom filters set Then click OK and OK to validate and exit these forms Open then Options Dome Heating control CCD cooling Alcor system 14 SKYWATCH Version 2 0 0 build 79 15 05 2015 Super user Mode English la File
39. rea to compute the level for the next exposure time Do not put more than 25s exposure time otherwise star will trail due to the Earth rotation Alcor system 26 3 4 The software stores all the files it produces into a directory that is specific to the user Control panel System status Camera Zoom Dis Camera G2 8300 4 Enable exposures Py Settings gt Fendi Exp max fs 25 1 05 Automatic exposure time Gainfexp computation method 612x512 central area All A Exposure compensation Ew F Storage of files produced by the camera control software d Astronomy Enable grid display if only horizon Center pixels 1200 Y Center pixels 1266 Radius pixels 1200 Morth position 65 0 J Reverse East West Show main objects Display Auto display ae ar ar ar I RADEC Ck Ea Manual display cut thresholds High Low Luminosity 2 Kooameke ack This directory and subdirectories is created automatically by the software Alcor system m Boao 1979 Apply 27 For example under Windows XP C Documents and Settings username My Documents SKYWATCH with username Name by which you connect on Windows XP f C Documents and Settings Uy DOE UITIS TLS Shey File Edit wiew Favorites Tools Help Get Ei pe Search yas Folders
40. rk correction coefficient 0 55 1 over 1x21 hot pixels Hot pixel ist Hot pixel correction each 15 x 15 pixels boxs mean Fig 47 If k gt 1 5 or k lt 0 5 it means that the master dark frame is not well appropriate to the current outdoor temperature conditions A warning message will be displayed as a red sentence Alcor system 35 3 5 2 Residual hot pixels repair fix Despite the subtraction by a master dark frame and the repair of hot pixels based on a list of coordinates some hot pixels are still variable appear and disappear from one frame to another To remove these last hot pixels that can t be removed previously the next checkbox shall be enabled Processings Mirror YY Mirror Color image From Bayer array 4 S J Remove dark Frame Hot pixel removal Show fixed hot pixels Maximum gap with neighboring pixels ADU Maximum stdey with neighboring pixels ADU Show fixed hot pixels Fig 48 ea 36 The algorithm automatically eliminates hot pixels by inspecting all pixels from the incoming image Two parameters to set two conditions are necessary The first parameter defines the difference of the pixel compared to its eight neighbors for which that pixel will be considered as potential hot pixels because it exceeds the defined gap as ADU The second parameter sets the maximum standard deviation of the eight neighboring pixels if the deviation is less than the defined value the central pix
41. the calculation of radiometric magnitude per square second across the sky It works on color and monochrome cameras In case of color image only green pixels will be considered 50 To do so you have to open this tab Display Recording Measurement t Sky background measurement Display image as magnitude per Warning Works only iF dark image is removed and camera gamma parameter is set to 100 cif can be References Exposure time ref s 60 0 Reference gain iF supported a Reference pixel signal gapay 100 Reference Magnitude per arcsec Anag Lens aperture Ff 3 0 Gain setting iF tunnable Gain A Coefficient 0 356170 B Coefficient 0 004045 Signal ADU a exp b Gain Currently in use Lens aperture Fi 3 0 Apply Fig 58 Tab used to set magnitude image mode display The calculation is based on a reference image with reference parameters To perform this a reference image is achieved with e An exposure time reference e A camera gain reference Alcor system 41 e Opening aperture reference which is usually fixed as the aperture setting is not accessible e Subtracting the reference image by a master dark frame e The camera gamma adjustment must be set to 100 e Avoid the presence of Milky Way overhead e Save reference image as CPA FITS Using this reference image the signal is expressed as ADU Nearby zenith the signal is measured and is reduced to a pixel
42. three ISO M6 not thru threaded holes by 10 mm depth Use the supplied screws to attach it or equivalent stainless steel A4 or A2 screw The whole camera weights 9 5 Kg so ensure that camera attachment is achieved properly to the mast The N S E and W direction is defined by rotating the camera accordingly This is up to the user to define camera orientation according to its needs Please perform image capture tests before attaching the camera to the pole Alcor system 3 60 Fig 1 The position of the three screws securing the USB camera yellow holes seen from the bottom of the camera There are three other holes that are filled with waterproof connectors leave this space free and 100mm underneath to allow the cables to run Connectors keying and different amount of pins are preventing connection errors However user must look at the number of connector pins at the end of the cord before connecting the camera in order to avoid forcing the pins and damage the camera connector Connector Genre on camera see fig 1 BLUE Power connector and RS232 link PINK USB 2 0 link to camera Alcor system Let the cables to go straight from the camera If the cables shall be bent respect a minimum curvature radius of 100 mm The waterproof connectors connect as follows e Identify the number of connector pins of the camera its type male female e Identify the number of pins of the connector cord and match e Identify
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