Re: Bits and pieces

[Tom Droege <tdroege2@earthlink.net>]

My assumption is that the procedure for making a dark and flat is not 
likely to change.  So it should be enough to save the master dark and 
master flat set.  I save these by date in a sub directory of dark and 
flat.  I always write a dark or flat data set to CD, and I never throw a CD 
set away.  So I could always reprocess the darks and flats from the CD data 
if I can find the CD.  OK, I have a spindle or two with just darks and 
flats labeled by date.  So I can probably do it.

It does not take very long to recover the dark and flat set to be 
used.  The real problem is how many images should be processed so that the 
photometry comes out right.

I still vote to keep the processed .fits instead of the originals.  But not 
both.  It is enough to write one set.  I don't see why we could not do 
everything with the processed images that we can do with the 
originals.  Stack them etc..

Tom Droege

At 04:12 PM 6/3/03 -0400, Stupendous Man wrote:

>   I wrote:
>
> >  One can recreate the master dark
> >  and flat from the raw images, but that will take several minutes.
>
>   Tom asked: