The first hour of the night was lost waiting for debris clouds to dissipate
from thunderstorms
that formed during the afternoon to the east and south of Kitt Peak. The first
lightning flashes of the season were seen after sunset. Once the sky cleared,
it was a very good night. Seeing was the best so far in this campaign, improving to 1 arcsec in the last few hours of the night from around 1.5 arcsec at
the start of the evening's observations.
