Weather Report for September 24, 2009

Observations of 5 Fermi blazars including 3C 454.3 with the MMT 6.5m telescope. These observations were inserted into gaps in the scheduled primary science program for the night. Skies were photometric, but the seeing was quite poor (> 1.5 arcsec) during the first half of the night, improving to less than an arcsec during the second half.