MDM Observatory 2.4m Telescope Observer's Report for 2001 Jan 24

Observer(s): Marianne Vestergaard
Institution(s): OSU

Instrument: CCDS

Worked for 13 hours (all night)
Conditions were Non-Photometric most of the night.
No equipment or software problems were encountered.

Seeing and Weather:
   Beg: Seeing ~2 arcsec, Clear, Winds Light & Variable
   Mid: Seeing ~3 arcsec, Clear, Winds Light & Variable, humidity rising,se
   End: Seeing 3.2 arcsec, Clear, Winds Light &amp; Variable, humidity <=80%,see

Observing Summary:

Clear, but possible very thin cirrus present at times. Seeing
very unstable and large (ca. 3arcsec most of the night).
Humidity rose steadily throughout the night, but never above
83% (at about 4-5am).

Dome didn't go back to contact point at shutdown. This was
corrected by using the `enable dome' (yellow) button and a
manual override. However, after having closed the done hatch
a humming sound remains which reminds me of a motor which is 
still running. I tried resetting this by opening the hatch 
again, but it remains. Is that the noise of the mirror A/C?
I haven't noticed earlier.

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Submitted on 2001 Jan 25 [7:56:59]