Weather Report for October 17, 2012

The cirrus generated by ex-hurricane Paul finally managed to move over most of southern Arizona. Because of this, serious observations couldn't start until around 2230 local time. The sky was much better after midnight than before. More than 10 blazars were successfully observed for polarization during this partial night, but fewer could be photometrically measured. The seeing was generally poor, coming in at between 2 and 3 arcsec.