We report a photometric observation of a WASP-1b exoplanet transit. The data was collected by using the automated 25-cm f/4.2 Schmidt-Cassegrain with a CCD camera cooled to -22 °C and single Johnson V band. The exposure time was 80 seconds. All images were bias, dark and flat subtracted. Comparison star (C) was GSC 2265-0054 (V 11.41 mag) and check star (C1) was GSC 2265-0182 (V 10.93 mag). Calculated transit starts on 29. Dec. at 19 h 16 min UT (JD 2454464.30) and ends.at 23 h 13 min UT (JD 2454464.47). Predicted central transit was at 21 h 15 min UT (JD 2454464.39).

The WASP-1b (GSC 2265-0107) object is located at R.A. = 00h 20m 40.075s, Decl. = +31° 59' 23.86" (equinox 2000.0).

WASP-1b Exoplanet Transit Light Curve
196 photometric observations were collected on night of 2007 Dec. 29-30 (start time HJD 2454464.2268, end time HJD 2454464.4728). Magnitude depth is 0.025 mag. Copyright © 2007 by T. Fabjan and M. Mihelčič, Kobdilj Observatory.

WASP-1b CCD Field
CCD field (22.5 x 15 arcmin, 1.77 arc sec/pixel ) of WASP-1b and surrounding stars, including comparison star GSC 2265-0054 and check star GSC 2265-0182. North is up and east is to the left. Copyright © 2007 by T. Fabjan and M. Mihelčič, Kobdilj Observatory.