Weather Report for September 29, 2011

Observing was a mixed bag tonight. The sky was generally clear, except for about an hour just after midnight, when fast-moving, thick cirrus came through. The seeing was generally good (1-1.5 arcsec), except for a relatively brief period near the beginning of the night, when it blew up to 2-4 arcsec. Unfortunately, the last hour of the night was lost to equipment problems. The wave plate wheel within SPOL would get lost with the telescope pointed to east. It took awhile to diagnose this problem and adjust the mechanical settings of the wheel. This problem appears to be solved, but we will see during the next night of observing (hopefully tomorrow, despite the observer getting little sleep). Overall, this was a good night, but it could have been better.