MDM Trouble Report for 2006 Feb 12

Telescope: 2.4m
Observer(s): Statler, Watanabe, Haas (Ohio Univ)
Instrument: Direct/Echelle

Problem(s) Encountered:
In testing ccdcom focus command, we found that in, apparently,
ALL images written by ccdcom, the TIME-OBS keyword in the image
header, which is SUPPOSED to correspond to the UTC at the start
of the exposure, is in fact the time at the END OF THE READOUT.
This can, and may well have, caused serious problems for any
time-resolved monitoring projects and photometric calibration.
This absolutely should be fixed so that the actual time at the
start of the exposure is written to this header keyword.

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Submitted on 2006 Feb 12 [7:23:47]