Despite a slightly larger than first quarter moon, this was an excellent night that completed Campaign 46. Except for a few isolated, thin cirrus clouds at the very beginning, it was a photometric night. The seeing was 1.2-1.5 arcsec all night.
Campaign 46 was interesting from two standpoints: (1) Although
temperatures during observations ranged incredibly from 10-52 deg F
over the course of the campaign, no time was lost to
clouds for nine very long nights and periods of really poor seeing
were surprisingly short. (2) Plenty of blazars were flaring
during the campaign and large polarization fluctuations were seen on
daily time scales for several objects. Campaign 47 will begin within two
weeks(!) at the Bok Telescope. Not much time to recover.
