Re: Beautiful Night

[Michael Koppelman <lolife@bitstream.net>]

Yeah, I don't think photometric quality is that dependent on a "good" 
night. However, I do think good transformation coefficients do depend 
on good nights. Brian's post with suggestions about how you guys do 
your photometry comes to mind. If you did all-sky transformation 
coefficients on the good nights, averaged them on many nights, you 
could get transforms that you use on all stars on all nights.

I think what you are doing now has tremendous value but the "something 
else going on", IMHO, is a result of doing separate transforms for 
every image.

Michael


On Sep 9, 2004, at 3:16 PM, tom wrote:

> Besides, when I take a bunch of clear nights and compare them to a 
> bunch of
> scuzzy nights, I don't see as much difference as I would expect.  So I 
> think
> something else is going on. 
>