Weather Report for July 20, 2014

A very good night by summer monsoon season standards. The sky was mostly clear for the entire first half of the night. Seeing bounced between 1.5 and 2.5 arcsec and occasionally approached 3 arcsec. The seeing improved to 1-1.5 arcsec after midnight, but monsoon debris clouds moved in from Mexico, slowing progress considerably. Nonetheless, it was a very productive night, with well over a dozen blazars observed.