RE: Ready to image candidate variable stars with a cookbook CB245 CCD

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

How about shooting a random star field and posting the
FITS image file some place.  That would allow us to

1) See just how good the CB245 images are. Measure the PSF
and so on....

2) See if we can't run your CB245 data through the same 
data reduction pipeline as we use for Mk IV data and if not
start figuring out how.

Of course you can do more sophisticated tests later but
I wanted to point out that just one random image file would be
useful.

The CB245 has not-square pixels.  (1) I wonder which is the best
way to orient the CCD.  Long dimension east/west so periodic
error will be hidden?  (2) Does the usual centrioding software
"know" about not-square pixels?  (3) Can you use a round
aperture for photometry?  The PSF will not be round.



> -----Original Message-----
> From: Tom & Lou Krajci [mailto:krajcit@3lefties.com]
<SNIP>
> 
> In the next few days I hope to set up my back patio rig on an 
> eq. mount and
> C-11 tube assembly.  Once I make sure I can find, focus, and 
> track I'll
> start imaging some candidate variable stars from the TASS 
> database.  I have
> a
> manual filter wheel (presently empty) that can hold four filters.
> 
> Any advice on stars I should try to image?
>