MDM Observatory 2.4m Telescope Observer's Report for 2007 Dec 27

Observer(s): Tobin and Ahu
Institution(s): Michigan

Instrument: TIFKAM

Worked for 13 hours (all night)
Conditions were Mixed most of the night.
Problems were encountered, see the separate trouble report for details.

Seeing and Weather:
   Clouds from 4:30 until 6:30.
   Beg: Seeing 0.85 arcsec, Clear, Winds Calm
   Mid: Seeing 1.1 arcsec, Clear, Winds Calm
   End: Seeing 1.3 arcsec, Cirrus, Winds Calm

Observing Summary:

The start of the night was perfect, photometric and seeing of 0.9 
until about midnight when seeing became ~1.2  and was that or worse
for the rest of the night. We were able to partially observe 2 primary
targets (as expected) and observe secondary targets.

At about 2 am the lower right quadrand of the detector began 
producing a strange read pattern. We did not attempt any
measures to correct the problem since we have no idea of the cause.

The problem of the offset motion from prospero was determined to be 
caused by using the telescope hand paddle to line up the guide star.
We stopped using the handpaddle and the problem did not reoccur.

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Submitted on 2007 Dec 28 [6:19:04]