Observations were made tonight. The first three hours of the night were
very difficult and it is not clear that polarimetry of CTA102 through thick
cloud cover will have enough photons for a decent measurement.
The sky slowly improved after CTA102 set, but high humidity stopped
operations for more than two hours just after midnight. Operations
resumed after the humidity lowered and continued until morning twilight.
Occasional thin cirrus was encountered during the latter half of the night
until thicker cirrus appeared during the last hour. The seeing was
around 3 arcsec for the first few hours of the night and then improved to
1-2 arcsec. Fifteen blazars were observed.
