Although it rained briefly a few times during the afternoon and there even
was some thunder heard, the sky was mostly clear by the end of evening
twilight. The sky remained clear until the last hour of the night when
some thin cirrus showed up to make photometry challenging. The seeing was
not nearly as good as during last night, but it remained reasonable (1.2-2 arcsec) most of the time. Near the end of the night, the seeing worsened to over
2 arcsec.
