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Changes between Initial Version and Version 1 of PS1_timing_problems


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Timestamp:
Jul 21, 2016, 10:22:26 AM (10 years ago)
Author:
eugene
Comment:

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  • PS1_timing_problems

    v1 v1  
     1== PS1 / IPP Time Errors ==
     2
     3* MJD-OBS (a TAI value in smf files) did not have the 2012.07.01 leap second in files for exposures after 2012.07.01 and processed between 2012.07.01 and 2012.11.09.  SHUTOUTC is OK.
     4
     5* Between 2015.04.26,16:45 HST and ~2015.05.12,12:00 HST the clocks on the camera readout computers drifted out of NTP lock, accumulating ~113s before the problem was fixed.  A table of corrections for the affected images was produced by Craig Rae by using information from one camera computers which did not drift. 
     6