TY PsA light curve during Sept 2004 activity

The telescope used for the observations is a SCT 203mm f/6.3 with a clear filter and a SBIG ST7E (KAF401E CCD) camera. The exposures are all one minute long.

The COMP star is GSC 6967-00037 with an assumed unfiltered magnitude of 13.6. The check star is GSC 6967-00030 with of magnitude of about 14.5.

The observations were with the stars very low over the horizon (air mass > 4). They were discontinued because of bad weather.

The red curve is for TY Psa, the green one for the check star minus 1.3 magnitude. The error bars are +/- the 1-sigma statistical uncertainties.