|#1. Astrotel Observatory, Karachay-Cherkessia, Russia;
#2. Surgut, Russia
Received: 6.02.2008; accepted: 28.02.2008
(E-mail for contact: email@example.com, firstname.lastname@example.org, email@example.com)
|We present the discovery of a new UV-type star USNO-A2.0 0900-20386773,
found by T. Kryachko
on images obtained with automated, Internet-operated telescopes at Astrotel Caucasus
The field with the new variable was observed during 3 nights in November 2007 (49
images, a total of 4 hours of
observations) with a SkyWatcher 80ED refractor (D = 80 mm, F = 480 mm) equipped with
a SBIG ST-2000XM CCD camera without filters; and during 11 nights in November 2007
- January 2008 (316 images, 26.5 hours of observations) with a Takahashi FRC-300
(D = 300 mm, F = 2350 mm) equipped with a SBIG STL-11000 CCD camera, without filters.
Exposure time of a single frame was 300 sec in both observation sets. The MaxIm DL
to control CCD cameras, to correct the frames for bias, dark and flat field and to
perform photometry. The comparison (USNO-A2.0 0900-20385124) and check (USNO-A2.0
stars are marked on the finding chart.
A single UV-type flare was detected at JD 2454457.13 (see the light curve). The observations are available electronically.