Weather Report for July 23, 2017

As usual for this week, a thunderstorm hit the observatory just before sunset and thick debris clouds from this and other nearby storms lingered around for the entire night. A brief, partially clear "hole" allowed two blazars to be observed in the last hour of the night. That was all that could be done. The seeing was 1.2 arcsec during the 45-minute period that the dome was open.