I’m new to this group and would like to ask about the time of each image acquired through SGP. I intend to use this software to carry out astrometric observations and would like to know whether the time stamp of the FITS header refers to the start, middle or end when the exposure was taken.
To astro-photographers this is a trivial question but to astrometrists this is crucial as differences could be made out even if there is an offset of a second or two. This is very visible for fast moving asteroids. Most software records the time for the start of the exposure, however I could not find anything about this on this forum or on the manual. Can someone please shed some light on this issue?
SGP is a very comprehensive package and for this reason I would like to start utilizing it for scientific imaging.
MPC171 Flarestar Observatory