Hi Ken, Jared and Joel,
I’m currently involved in a pro/am programme whereby accurate time-stamps are essential. Having a timestamp that includes milliseconds, e.g. YYYYMMDDHHMMSS.SSS or something very similar, in the FITS header would be of great help.
The timestamp should be the time the camera was triggered to open the shutter for each exposure. At present I synchronise my system time using a GPS doggle and a recognised SNTP server. I appreciate that due to the PC’s scheduling of tasks and SGPro that inconsistencies would remain but this facility would enable me to take better account of the delays involved to characterise the SGPro/Camera/Header relationship.