Changes between Version 221 and Version 222 of PublicPages/MayallZbandLegacy/NotesforObservers


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Timestamp:
Jan 6, 2018 2:54:54 AM (7 years ago)
Author:
Jeffrey A. Newman
Comment:

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  • PublicPages/MayallZbandLegacy/NotesforObservers

    v221 v222  
    217217
    218218=== 3b If you are Observing in the 2017B semester: ===
    219 The json files that are generated by the strategy code (mstrategy) will require a very large slew near the end of the night (~09:40ut = 02:40am) which will take you from the west end of the DESI North Galactic Cap footprint to its eastern end. The problem with this is that the system times out during the long slew, and this causes it to crash.
     219The json files that are generated by the strategy code (mstrategy) will require a very large slew near the end of the night (~09:40ut = 02:40am) which will take you from the west end of the DESI North Galactic Cap footprint to its eastern end. The problem with this is that the system times out during the long slew, and this causes it to crash.  **Note: This has also happened on occasion in 2018.**
    220220
    221221The procedure until further notice is to break each new json file that is created in the ~mzls/obsbot/ directory into two parts at the point of this large slew. (This will not be necessary if MzLS is scheduled for a first-half night, since you will be stopping observing at ~00:30am, but it will be an issue for all full nights.)
     
    275275
    276276Check that all is well by taking a test zero exposure.
    277 On the IRAF window, check the image statistics by cd-ing to the correct directory and typing "mscstat <filename>"
     277
     278To do this, in a nocs window (an xterm connected to observer@mosaic3) do:
     279{{{
     280cd ~/exec/MzLS
     281./ZERO1_MzLS.sh
     282}}}
     283
     284After the image is done, on the IRAF window, check the image statistics by cd-ing to the correct directory (e.g., /data/observer/20180105 for data from Jan. 5 2018) and typing "mscstat <filename>"
    278285All rms values should be about 4-6 adu/pix; the exceptions are amplifier [6] or [14] which can have an rms~8-10 adu/pix.
    279286If any one amplifier shows very high noise, then execute the following commands in a nocs window: