1、Tests of AST3-2 at Xinglong:Image Analysis,Ma BinNAOC2013.05.20,Tests of AST3-2 at Xinglong,Date: late Feb early AprilTests:focusingpointing, trackingoperation & data systemauto-surveyreal-time pipeline & databaseremote control,High Dark Level,CCD TEC did NOT work wellt_CCD t_air (0)dark: 100ADU/s (
2、sky: 10ADU/s)Pixel-to-pixel varianceLimiting depth!,Field Rotation,Alt-Az mount,Field Rotation,30 sec,Field Rotation Speed,Limiting Exptime !,Focusing,Steps:Frames at diff. fFWHM measurementFittingInfluences:SeeingUnsteady due to movement,Focal Plane,Pointing Correction,Tpoint:telescope axes .vs.alt-az,Pointing Time,Neighbor field: 1.5 degree Firstly criterion RMS2“, 40sec0324 20sec, but elongated0409 RMS1.5”, trailhigh speed sampling,Trail of Bright Star,Movement of the center when both tracking and untrackingCause:Seeing？Shake of the telescope？,Thank you !,
