Weather Report for December 6, 2012

More light cirrus was present for several periods during the night, most especially in the first hour or so and during the last two hours of this very productive night. Most of the middle portion of the night was clear and photometry was obtained along with the spectropolarimetry. The seeing was extremely good, being <1 arcsec for several lengthy periods. Near the end of the night, the seeing degraded to 1.5-2 arcsec as the heaviest cirrus of the night moved in.