Changes between Version 1 and Version 2 of PublicPages/MayallZbandLegacy/NotesforObservers/Problems


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Timestamp:
Feb 3, 2016 1:59:15 AM (9 years ago)
Author:
Arjun Dey
Comment:

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  • PublicPages/MayallZbandLegacy/NotesforObservers/Problems

    v1 v2  
    88
    99Can be usually fixed by typing the following in a NOCS xterm window:
    10         nocs reset ccp
    11         nocs init ccp
     10        - nocs reset ccp
     11        - nocs init ccp
    1212Then take two zero images. The first image is always bad. The second should be ok. Check it using  mscstat <filename> once it has read out. All rms values should be between 4-7 adu (except for amps 6 and 14, which may be ~8-10).
    1313
    … …  
    1515
    1616OA should notice this, but you can keep track of the mirror support system on the 4MAPS gui. If it says “OFF AIR”, the mirror is off air!
    17         Type Control-C to exit out of the observing script
    18         wait for it to finish and for “DONE” to appear on the NMSL gui
    19         type “ditscmd nohs nohs_endobs” in the xterm window in which the script was stopped. This should readout the last image and display it on the real-time display ximtool window
    20         Tell the OA they can move the telescope to zenith and reset 4MAPS
    21         Check the last image taken when 4MAPS failure occurred - the image quality is probably bad. Log the image file / exposure number
    22         Edit the mzls*sh script. This is a bit complicated, since you need to keep the first 8 lines of the script, and then delete everything up to the point where you stopped. The image number at which you stopped is probably displayed in the NMSL gui. Let’s say the last image was No. 14. You may want to repeat this image, if the image quality was bad due to the 4MAPS failure. So delete all lines for image exposures No. 1 to No. 13, but be careful that you retain the telescope positioning command in the script that occurs just before the line ==== No. 14 ==== .
    23         Once the OA has reset 4MAPS, you can restart the script. The telescope will slew to your position and start the exposure.
     17        - Type Control-C to exit out of the observing script
     18        - wait for it to finish and for “DONE” to appear on the NMSL gui
     19        - type “ditscmd nohs nohs_endobs” in the xterm window in which the script was stopped. This should readout the last image and display it on the real-time display ximtool window
     20        - Tell the OA they can move the telescope to zenith and reset 4MAPS
     21        - Check the last image taken when 4MAPS failure occurred - the image quality is probably bad. Log the image file / exposure number
     22        - Edit the mzls*sh script. This is a bit complicated, since you need to keep the first 8 lines of the script, and then delete everything up to the point where you stopped. The image number at which you stopped is probably displayed in the NMSL gui. Let’s say the last image was No. 14. You may want to repeat this image, if the image quality was bad due to the 4MAPS failure. So delete all lines for image exposures No. 1 to No. 13, but be careful that you retain the telescope positioning command in the script that occurs just before the line ==== No. 14 ==== .
     23        - Once the OA has reset 4MAPS, you can restart the script. The telescope will slew to your position and start the exposure.
    2424
    2525'''3. Shifted images'''