MDM Observatory 1.3m Telescope Observer's Report for 2007 Jun 17

Observer(s): Vestergaard
Institution(s): Arizona

Instrument: CCDS

Worked for 8.75 hours (all night)
Conditions were Mixed most of the night.
No equipment or software problems were encountered.

Seeing and Weather:
   Beg: Seeing 2.3 arcsec, Clear, Winds Moderate, cirrus in horizon
   Mid: Seeing 1.3 arcsec, Clear, Winds Moderate
   End: Seeing 1.2 arcsec, Clear, Winds Moderate, cirrus in horizon

Observing Summary:

It was clear at sunset with a few cirrus clouds in north horizon.
Transparency was very good all night. So was seeing -even at
airmass of 1.9! However, my last object was a standard right 
overhead and the seeing was then very unstable (unstable air
right overhead?). The star jumped in and out of the slit and 
the seeing varied from about 1.3-2.0 . Amazing.
Otherwise a very nice night overall. I thought the cirrus had 
dissipated for radar showed no humidity, but there were cirrus
in the north horizon on KPNO webcam.

------------------------------

Submitted on 2007 Jun 18 [4:54:39]