{
  "submitter": "Denis Denissenko at IKI, Moscow  <denis@hea.iki.rssi.ru>",
  "createdOn": 1200066256000,
  "circularId": 7166,
  "email": "denis@hea.iki.rssi.ru",
  "format": "text/plain",
  "subject": "X-ray transient in NGC 2770: Optical observations with Astrotel-Caucasus",
  "body": "D. Denisenko (IKI, Moscow), S. Korotkiy (Ka-Dar obs.), T. Kryachko\n(Astrotel obs., KSU), B. Satovskiy (Astrotel obs., KSU),\nK. Sokolovsky (ASC LPI, SAI MSU) report: \n\nWe took three 300-sec unfiltered images of NGC 2770 between 19:00 and 19:18 \nUT\non 2008 Jan 10 with 300-mm f/7.7 robotic telescope equipped with STL-11000M \nCCD camera. The telescope is located at Kazan State University Astrotel \nobservatory (Karachay-Cherkessia, Russia). The optical source reported by \nDeng & Zhu (GCN 7160) and Thoene et al. (GCN 7161) is clearly detected on \nindividual images with SNR=18. Using the same comparison star as in D'Elia \net al. (GCN 7162), we have measured unfiltered magnitude (with R zero-point) \nof the transient 18.1+/-0.1\n(JD 2454476.2979). \n\nThe finding chart is available at\nftp://scan.sai.msu.ru/pub/XRT_NGC2770/OT-NGC2770-Astrotel.jpg \n\nThe individual fits images can be downloaded from\nftp://scan.sai.msu.ru/pub/XRT_NGC2770/ \n\nThis message can be cited.\n\n[GCN OPS NOTE(21jan08): \"Astrotel-Caucasus\" was added to the end of the Subject-line.]",
  "eventId": "SN2008D",
  "editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov>",
  "bibcode": "2008GCN..7166....1D",
  "version": 2,
  "editedOn": 1746478348127
}