GCN Circular 7166
Subject
X-ray transient in NGC 2770: Optical observations with Astrotel-Caucasus
Date
2008-01-11T15:44:16Z (17 years ago)
From
Denis Denissenko at IKI, Moscow <denis@hea.iki.rssi.ru>
D. Denisenko (IKI, Moscow), S. Korotkiy (Ka-Dar obs.), T. Kryachko
(Astrotel obs., KSU), B. Satovskiy (Astrotel obs., KSU),
K. Sokolovsky (ASC LPI, SAI MSU) report:
We took three 300-sec unfiltered images of NGC 2770 between 19:00 and 19:18
UT
on 2008 Jan 10 with 300-mm f/7.7 robotic telescope equipped with STL-11000M
CCD camera. The telescope is located at Kazan State University Astrotel
observatory (Karachay-Cherkessia, Russia). The optical source reported by
Deng & Zhu (GCN 7160) and Thoene et al. (GCN 7161) is clearly detected on
individual images with SNR=18. Using the same comparison star as in D'Elia
et al. (GCN 7162), we have measured unfiltered magnitude (with R zero-point)
of the transient 18.1+/-0.1
(JD 2454476.2979).
The finding chart is available at
ftp://scan.sai.msu.ru/pub/XRT_NGC2770/OT-NGC2770-Astrotel.jpg
The individual fits images can be downloaded from
ftp://scan.sai.msu.ru/pub/XRT_NGC2770/
This message can be cited.
[GCN OPS NOTE(21jan08): "Astrotel-Caucasus" was added to the end of the Subject-line.]