A photometric night but some of the worst seeing experienced in a long, long time
had to be endured until about 2300 local time. The seeing varied between
4 and nearly 10 arcsec during this early portion of the night. Much wider
slits had to be employed than usual in order to cope with very fat
blazars. Fortunately, the seeing improved rapidly and stabilized to
1.5-2 arcsec for the rest of the night.