Weather Report for April 30, 2014

After a one-night hiatus, the second part of Campaign 60 is greeted by clear skies and cold air. The temperature dropped to within a few degrees of freezing by the end of the night. This is rare for this late in the season in Arizona even at this altitude. Unfortunately, the photometic sky was accompanied by some of the worst seeing that I've seen for quite some time. During the first few hours of the night, the seeing was poor (2.5-3 arcsec), but not absurd. After midnight, things went really bad with seeing of 3-5 plus arcsec. Only brighter targets could be observed, but it was a productive night.