calibration update

[Arne Henden <aah@nofs.navy.mil>]

I was able to use the 1.3m two nights ago and got 4x2degree
swaths of the 16hr SDSS calibration field, plus about 2x2degrees
in another calibration field ("O") at 21hrs.  The sky conditions
were marginal, however.  I hope to get a second pass on those
fields sometime in the next week.  Tonight looks clear and I will
do the southern half of both fields.  Monsoon is predicted to start
by the weekend.
   Once the data is collected, it will take me a week or two to find
enough time to fully process the frames and generate photometry
files.
Arne