MDM Observatory 1.3m Telescope Observing Report for 2010 Feb 07

Observer(s): Fesen
Institution(s): Dartmouth

Instrument: Direct Echelle

Worked for 9 hours (most of the night)
Conditions were Non-Photometric most of the night.
No equipment or software problems were encountered.

Seeing and Weather:
   High Humidity from 4 am until 6 am.
   Beg: Seeing 1.8 arcsec, Clear, Winds Calm
   Mid: Seeing 1.7 arcsec, Clear, Winds Calm
   End: Clear, Winds Calm

Observing Summary:

A mostly clear night with fair to good seeing. Closed up at 4 pm
due to humidity rise above 85%. Had frost from on dewar window
just prior to shutdown.
Experienced major problems with telescope tracking during latter
half of night. Telescope would continuously jerk 1 to 2 arcseconds
every few seconds in a north-south motion...making imaging 
impossible for most objects during the night. Lost
several hours of the best night yet. See trouble report.

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Submitted on 2010 Feb 8 [5:43:45]