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chara:trouble_shooting [2022/02/09 19:24]
charaobs
chara:trouble_shooting [2022/02/10 13:46]
charaobs
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   * Check the instrument alignment. Is flux getting through to the detector? How long has it been since the last NIRO camera alignment? Classic and CLIMB programs can run for about an hour before the light will drift from the central pixel. Use the Classic or CLIMB gui to view the light on the pixels by clicking the PICTURE tab and then the PIXEL AREA button. Turn the camera off with the STOP button. Is the right dither power turned on? CLIMB 1 and Classic use different dithers. If Classic or CLIMB fringes are found in a scan, but not when in recording mode, the dither powers are likely not on. Are the camera settings correct for the seeing conditions and flux levels?   * Check the instrument alignment. Is flux getting through to the detector? How long has it been since the last NIRO camera alignment? Classic and CLIMB programs can run for about an hour before the light will drift from the central pixel. Use the Classic or CLIMB gui to view the light on the pixels by clicking the PICTURE tab and then the PIXEL AREA button. Turn the camera off with the STOP button. Is the right dither power turned on? CLIMB 1 and Classic use different dithers. If Classic or CLIMB fringes are found in a scan, but not when in recording mode, the dither powers are likely not on. Are the camera settings correct for the seeing conditions and flux levels?
 +  * There is a script that will display offsets for all scopes against Hour Angle to help find offsets when using MIRCX and MYSTIC. You'll need to log into the MIRCX spooler computer with the command ssh spooler@mircx, then use the command fringe_predictor. A window will pop up displaying the last five nights of offsets vs. HA.
  
 ===== The new OPLE system ===== ===== The new OPLE system =====
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 You may have to reinitialize the scope on a bright star. If the powers were turned off quickly when the problem was noticed, the position of the scope should be retained and slewing to a bright star will get it in the finder. If not, you may need to go out to the telescope to find the bright star to reacquire the scope's position. You may have to reinitialize the scope on a bright star. If the powers were turned off quickly when the problem was noticed, the position of the scope should be retained and slewing to a bright star will get it in the finder. If not, you may need to go out to the telescope to find the bright star to reacquire the scope's position.
  
-Be aware that when restarting a dome server, the telescopes position may not be retained and the dome gui may display Az: 0.0. El: 0.0.  The gui will scroll messages that say Az: 0.0. El: 0.0 with an error in scope position.  If the scope is known to be at STOW position, you can manually enter the scope's AZ and EL using the manual tab on the dome gui and hitting the INIT button.+Be aware that when restarting a dome server, the telescopes position may not be retained and the dome gui may display Az: 0.0. El: 0.0. The gui will scroll messages that say Az: 0.0. El: 0.0 with an error in scope position. If the scope is known to be at STOW position, you can manually enter the scope's AZ and EL using the manual tab on the dome gui and hitting the INIT button.
  
-Also be aware that the gains do not always return to the normal values of Slew 4-7 and Tracking 7-10 when a dome server has crashed and is restarted.  They may come up as Gain 22 for all axes and modes and they will need to be turned down or the scopes will oscillate badly.+Also be aware that the gains do not always return to the normal values of Slew 4-7 and Tracking 7-10 when a dome server has crashed and is restarted. They may come up as Gain 22 for all axes and modes and they will need to be turned down or the scopes will oscillate badly.
  
 ==== Telescope is not receiving the commanded position for a target. ==== ==== Telescope is not receiving the commanded position for a target. ====
chara/trouble_shooting.txt ยท Last modified: 2023/11/21 01:42 by charaobs