MDM Observatory 2.4m Telescope Observing Report for 2012 Jan 16

Observer(s): John Thorstensen
Institution(s): Dartmouth

Instrument: Modspec + Nellie

Worked for 1.5 hours (last half of the night)
Conditions were Mixed most of the night.
Problems were encountered, see the separate trouble report for details.

Seeing and Weather:
   Fog from start until 4 AM.
   Beg: Fog/Low Clouds, Winds Light & Variable
   Mid: Fog/Low Clouds, Winds Light & Variable
   End: Seeing 1.5 arcsec, Clear, Winds Light & Variable

Observing Summary:

Fog until 4 AM, then clear with high humidity, then humidity 
dropped amazingly fast after about 5:20.  It must have cleared
from the top down, because KPNO was open long before I was.  
I only had time to get one science object and a few standards,
and to find the glitches.  See trouble report for those.

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Submitted on 2012 Jan 18 [7:22:08]
NOTE: This report replaces the previous 2.4m telescope
      observing report for 2012 Jan 16