Weather Report for April 18, 2015

There were a few stray cirrus clouds that moved down from the north during the fist couple of hours of the night. Nothing of any consequence. After that, the sky was photometric for the rest of the night. The seeing was erratic during the night. At some points it was better than 1.5 arcsec, at other times, worse than 3 arcsec. Most of the bad seeing was after midnight.