Weather Report for April 6, 2018


Campaign 109 starts at the Kuiper Telescope on Mt. Bigelow, AZ, with yet another titanic struggle to get data through cirrus clouds. It has been very difficult to get a clear night since the middle of February. After midnight, a bright moon approaching third quarter rose to illuminate the clouds streaming over the observatory and made a poor observing situation even worse. Nevertheless, spectropolarimetry was obtained for over 10 blazars in seeing of 1.3-3 arcsec.