GRB080603B 2008 06 06, CrAO, Zeiss-1000 (Simeiz) Start series 2008-06-06T19:20:30.84 End series 2008-06-06T20:27:06.62 Sum 33 images Exp 33x120 sec = 3960 sec = 66 min seeing 3 arcsec Filter R Limit = 22.5 R OT ? Mag = 22.1 +/- 0.27 R -----------------------