{
  "bibcode": "2017GCN.21754....1P",
  "body": "A. Pozanenko (IKI), A. Volnova (IKI), I. Reva (AFIF),  E. Mazaeva (IKI), \nP. Minaev (IKI),  M. Krugov (AFIF) report on behalf of IKI-GW follow-up \ncollaboration:\n\nWe observed the field of the Optical Transient discovered by Swift/UVOT \n(Emery et al., GCN 21733)  with  Zeiss-1000 1-m telescope of Tien Shan \nAstronomical Observatory starting on 2017-08-28 (UT) 18:54:36. We \nobtained several images in R-filter.  The optical transient (Emery et \nal., GCN 21733) is not detected in a combined image.  Preliminary \nphotometry of the afterglow is following.\n\nDate       UT start   t-T0    Filter    Exp.   OT   Err.  UL\n                   (Since LVC,mid, days) (s)         (3 sigma)\n\n2017-08-28 18:54:36  3.24609  R         8*180  n/d  n/d  20.8\n\nPhotometry is based on nearby USNO-B1.0 stars (R2 magnitudes).\nThe nearest galaxy (SDSS J014008.25+343414.8) to the transient position \nin coordinates (J2000) 01 40 08.247 +34 34 14.43 +/- 0.25\" is marginally \ndetected. The galaxy is at a distance of 11.5 arcsec from the transient \nposition. The galaxy photometry is R=21.45 +/- 0.45.",
  "circularId": 21754,
  "createdOn": 1504033070000,
  "email": "grbgw.iki@gmail.com",
  "subject": "LIGO/Virgo G299232: observations of the optical Transient Discovered by Swift/UVOT",
  "submitter": "Alexei Pozanenko at IKI,Moscow  <grbgw.iki@gmail.com>",
  "eventId": "LIGO/Virgo G299232"
}