Changes between Version 209 and Version 210 of PublicPages/MayallZbandLegacy/NotesforObservers


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Timestamp:
Sep 8, 2017 8:35:37 AM (7 years ago)
Author:
Arjun Dey
Comment:

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  • PublicPages/MayallZbandLegacy/NotesforObservers

    v209 v210  
    208208The 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.
    209209
    210 The 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 tonight, since you will be stopping observing at 00:27am, but it will be an issue for all your full nights.) This means that the observing script with which you start the night will terminate at around 2:40am. At this point, ask the telescope operator to slew to the first position on the eastern side of the NGC. Once the telescope has reached there, then restart mosbot by executing
     210The 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.)
     211
     212This means that the observing script with which you start the night will terminate at around 2:40am. At this point, ask the telescope operator to slew to the first position on the eastern side of the NGC. Once the telescope has reached there, then restart mosbot by executing
    211213        python mosbot.py pass1b.json pass2b.json pass3b.json —adjust —pass=3 —exptime=100
    212214(where all the — are really two dashes). This will allow this system to continue without timing out during the slew.
    213 
    214 
    215215
    216216Deprecated instructions using a modified version of "nightlystrategy" is at [wiki:MayallZbandLegacy/NightlyStrategyOld]