[guide-user] Charon flat-fielding
Lawrence Harris Mar 1, 2000
Hi Bill
Before I do any Charon astrometry, I take my original CCD image and
subtract the dark frame, then save the result as a FIT file for Charon.
Is that not standard practice? The subtraction process takes seconds
and will only relate to a set of files from one time period - ie., I
take later dark frames for later images.
There may be many 'wish list' facilites, but this one is not there!
best wishes
Lawrence Harris