The official start to Campaign 85 was, as expected, a difficult night.
An isolated thunderstorm developed south of Kitt Peak in the very late afternoon. The debris clouds from that storm lingered for a few hours after sunset.
Observations could be made through the clouds, but no photometry could be
obtained. After midnight, the debris clouds thrown off of a huge complex
of storms to the southeast made observations increasingly difficult.
By 0130 local time, the dome was closed the final time for the night after
almost 10 blazars had been observed. The seeing varied between 1.8 and 3
arcsec and was usually 2-2.5 arcsec.