RE: fun with co-adding images on Disk Set 19

["Creager, Robert S" <CreagRS@LOUISVILLE.STORTEK.COM>]

Hey Michael (and all),

I've had success using your match program to match two star lists of x,y
coordinates.  I use this in my reduction pipeline when I cannot find a match
from on of the bands.  If, for instance, the I band can be matched to the
catalog, but not the V band, I match the V band to the I band (x,y coords),
apply the transformation found to the V x,y coords, and then apply the I
band transform to take it to RA, DEC.

The thought is by doing a reduction to stars first, and then matching image
x,y to image x,y with a scale of 1, it should be possible to do the
co-adding automatically by shifting the images by the match solution.
Although maybe this is what you already did...

I'm in the process of getting a database working for doing the rest of the
work, so hopefully, by next week, I'll have the results of "Rob's Software"
part II.  And we'll see if that works.  Although, Disk Set 19 doesn't have
the problem of not matching to Tycho2, but this problem shows up in earlier
disk sets (for me at least).

Is there interest in software which attempts "automatic" co-adding of
images?  I'd be happy to have a go, since I've got some groundwork already
in place.  Probably after I've got some quality results from my pipeline :-)

Later,
Rob

> -----Original Message-----
> From: Stupendous Man [mailto:richmond@a188-l009.rit.edu]
> Sent: Tuesday, October 16, 2001 10:15 AM
> To: tass@listserv.wwa.com
> Subject: fun with coadding images on Disk Set 19
> 
> 
> 
>   Check out my quick'n'dirty analysis of coadding frames
> from disk set 19:
> 
>        http://a188-l009.rit.edu/tass/markiv/michael/coadd/coadd.html
> 
>   People who are working on DS 19 may find the shift in
> position from frame to frame, even in the "follow" frames,
> of some interest ...
> 
>                                      Michael Richmond
>