Weather Report for December 26, 2013

Clear skies continue throughout Arizona. Conditions were excellent at the start of the night, with seeing of a little greater than an arcsec. A strong east wind set up early and brought very poor seeing 2-4 arcsec for the remainder of the night. The seeing was so bad at times that faint objects had to be skipped in favor of brighter blazars. Over 20 blazars were observed during the long night.