Weather Report for February 19, 2012

Finally, after almost a week, a full night of observing! So far, the only other complete night was the first night of the campaign. The sky was photometric with good seeing (0.9-1.5 arcsec) until about 0130 local time, when thin scattered cirrus from the tail of another weather front to the north came over the observatory site. The wind rose during the night to 20-30 mph, but stayed safely below the limit for observing. The cirrus did not significantly slow observations and cleared off, leaving photometric conditions during the last couple hours of the night.