Clouds prevented operations until around 2300 local time.
The first hour or so of observations were slowed by lingering clouds, but
the rest of the night was fairly productive despite the fact that the sky never
cleared completely. The seeing was around 2 arcsec, but in the last couple
of hours of the night, it improved to better than 1.5 arcsec.
No photometry could be obtained in these marginal conditions.
