22 Nov
2005
22 Nov
'05
12:06 p.m.
Wow, it's much more complicated than I thought. Thanks, Deb. I guess you could take flat-field exposures at dawn after a night of observing and before taking down your gear. Or maybe a flat-field box is a good way to go, sticking it on the telescope during your observing session and making an exposure, then taking the box off and going on with your project. It's almost more work than I want to do, with the trouble I have making the thing guide right! Thanks, Joe