Weather Report for July 20, 2015

A gap developed in the wet weather during the afternoon and early evening, allowing nearly three hours of observation in mostly clear skies. The humidity rose past the observing limit a little after 2300 local time and the dome remained closed until it fell under 90% at just after 0300. One more target was successfully observed through cirrus before the humidity again rose too high with about 20 minutes to go before the start of twilight. The seeing during the usable portions of the night was a respectable 1.5 arcsec.