Shutter duration and reference clock?

[rseaman (Rob Seaman)]

Is there a document describing the histogram of shutter open/close durations in each direction as measured during commissioning?

Ditto for image header keywords associated with the shutter? What is the reference clock (meaning the physical clock as well as timescale) associated with accurate timings of shutter motions? Do calibration images share the same clock?

Probably a data management question, but are times associated with events or moving objects detected in an image corrected for the motions/direction of the shutter?

[timj (Tim Jenness)]

@rseaman

but are times associated with events or moving objects detected in an image corrected for the motions/direction of the shutter?

Times associated with DIASource detections will be corrected for the shutter motion (these are always in TAI MJD).

This was not done for DP1 since the shutter design for LSSTComCam is very different and the field of view is much smaller.