MDM Observatory 1.3m Telescope Observing Report for 2011 Jun 15

Observer(s): S. Lepine
Institution(s): AMNH

Instrument: MkIII + Wilbur

Worked for 8 hours (all night)
Conditions were Photometric most of the night.
No equipment or software problems were encountered.

Seeing and Weather:
   Beg: Clear, Winds Light & Variable
   Mid: Clear, Winds Moderate
   End: Clear, Winds Light & Variable

Observing Summary:

Very bright full moon which was not a problem for this 
follow-up program of Kepler stars. Observed 38 targets 
total.

I couldn't use the guider because the guide camera was 
seriously out-of-focus and I couldn't figure out how to 
focus it. This was not too much of an issue since all the
night's exposures were short, and the tracking is good.

I found that the CCDS chip shows significant fringing
in the red, up to 30% at 8000A. In addition the instrument 
shows signs of flexure, which means that flats must be obtained 
for every pointing to properly correct for the fringing pattern.


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Submitted on 2011 Jun 16 [5:27:34]