MDM Observatory 2.4m Telescope Observer's Report for 2007 Jan 02

Observer(s): K. Schlesinger
Institution(s): OSU

Instrument: CCDCOM

Worked for 10 hours (most of the night)
Conditions were Photometric most of the night.
Problems were encountered, see the separate trouble report for details.

Seeing and Weather:
   Beg: Clear, Winds Calm
   Mid: Seeing 1.5 arcsec, Clear, Winds Light & Variable
   End: Seeing 1.5 arcsec, Clear, Winds Light & Variable

Observing Summary:

We initially had problems with the sizes of the two new filters for
the 4in filter wheel. They were too large and prevented the wheel 
from turning well. Bob and Steve did some small modifications and 
determined that as long as you went one by one from filter to filter 
in the same direction, everything would be fine. After this was resolved 
we had problems pointing the telescope, most likely due to the fact 
that something was obscuring the middle of the CCD chip. Neither 
the guider nor RETROCAM were responsible for this. We reinitialized 
the filter wheel and moved RETROCAM and the guider in and out 
several times, which solved the mysterious obscuration problem. 
The rest of the nights' observing went smoothly. Seeing ranged 
from around 1 to 2 arcsec. There was a light haze, and 
the moon was very bright. We observed 4 target galaxies in the two new
filters and two photometric standards. 

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Submitted on 2007 Jan 3 [7:30:16]