Weather Report for December 27, 2014

Yesterday's storm left clear skies, calm winds, and very cold temperatures for tonight. Conditions were photometric, but the seeing was poor during the first part of the night (2.5-3 arcsec) as expected with a primary mirror temperature nearly 10 degrees warmer than the ambient air, which dropped to about 20 deg F by midnight. The seeing improved as the night wore on, reaching a respectable 1.5 arcsec in the final few hours. Just over 20 blazars were observed -- nearly 20 more than measured over the past two nights.