Re: Photometric solutions: Disk 16 vs. Disk 17

[Jure Skvarc <jure.skvarc@ijs.si>]

Michael
 
>          I know that the first character encodes the observatory site
>          ('h' means Tom's house), the second character encodes the
>          filter name ('v'), but I don't know what "ra1992810" means.
>          Could someone let me know?
> 

It looks to me the number part is int((JD - 2450001) * 1000) where JD is the
Julian Day. I don't know what is ra, but probably it doesn't really matter.


Could you tell us to what catalog did you match I magnitudes?  I pressume you
matched V magnitudes to Tycho, bu was it VT or the transformed V, as given in the
TYCHO readme file?

As for deviations in magnitudes I found some spots on V images which didn't go
away with flatfielding.  I pressume my error was in making a master flat image
from images of all three nights because not all of them have these spots. 

			Jure Skvarc