MDM Observatory 2.4m Telescope Observer's Report for 2005 Feb 28

Observer(s): Pietro Reviglio
Institution(s): Columbia

Instrument: MKIII

Worked for 9.30 hours (most of the night)
Conditions were Mixed most of the night.
No equipment or software problems were encountered.

Seeing and Weather:
   High Humidity from 4.00 until 6.
   Beg: Cirrus, Winds Calm
   Mid: Cirrus, Winds Calm
   End: Cirrus, Winds Calm, high humidity

Observing Summary:

Early in the night the weather condition were good for spectroscopy, humidity between 60% and 70%, no wind, light cirrus.
We managed to point and focus the instrument, observe one of our targets and the calibrators. 
Later in the night (after 3.30) the humidity steeply increased and eventually went above the thresold of 85%  We were therefore forced to close the telescope.

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Submitted on 2005 Mar 1 [4:30:44]