Home › Forums › Variable Stars › Error in ASIIMG FITS header › no confusion ?
29 July 2021 at 12:01 pm #584542
Nick said “The FITS “standard” is irritatingly vague about things like this ..”
According to this document, in 1997 the IAU recognised this confusion and standardised DATE-OBS as the start time
“4.2) Henceforth, DATE-OBS shall be assumed to refer to the start of an
observation. Other interpretations must be clearly explained in the comment field.”