RE: Making Flats

["Albertson, Chris" <CAlbertson@primeadvantage.com>]

My comment about not including WCS was really aimed at Tom's
median frames.  These are made out of some large number of
raw dark frames.  I just don't think you can have meaningful
WCS on these.

> -----Original Message-----
> From: aah@nofs.navy.mil [mailto:aah@nofs.navy.mil]
> Sent: Monday, April 30, 2001 7:41 PM
> To: tass@listserv.wwa.com
> Subject: RE: Making Flats
> 
> 
> I think WCS should be included on all flats and darks.
> First, every program I know of does not use WCS when doing
> normal image operations like dark subtracting or flatfielding.
> Second, if you include WCS, you can sometimes track down strange
> errors like reflections or light leaks, since you know where
> the telescope was pointed.  In other words, WCS doesn't hurt
> and can help.