Re: Notes on Disk Set 19

[Tom Droege <tdroege@veriomail.com>]

As Michael would say, Rats!

I thought I had picked out a good set for DS-19.  I have found that I have 
to run the dried air through the V camera for 4-5 hours before starting a 
run if I am not to get the ice.  Sigh!  Some of the later runs are clearer.

Actually, this run looked pretty good to me at the time, but I now have 
better ones.

You are right about all the images being "object" images.  I changed the 
code to quit taking the darks during the follow run but it looks like I 
forgot to fix the fits header.

It is very useful to get feedback.

I was hoping that you would combine the images in twos or fours to go deeper.

Tom Droege

At 03:19 PM 10/13/01 -0400, you wrote:

>   I'm running through the data in Disk Set 19, and thought I'd
>share a few discoveries with others.
>
>   First, the V-band follow run on disk 19-2 (and, I am guessing,
>the I-band follow run on disk 19-3) contain target images exclusively.
>That is, all the images on that disks show pictures of the night sky;
>there are no dark images.  Some of the FITS headers _say_ that they
>are of type "dark", but they really aren't.