{
  "subject": "GRB 100206A: optical observations in Terskol",
  "eventId": "GRB 100206A",
  "bibcode": "2010GCN.10455....1A",
  "createdOn": 1267153115000,
  "circularId": 10455,
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "email": "apozanen@iki.rssi.ru",
  "body": "M.Andreev,  A.Sergeev, N.Parakhin, N.Karpov (Terskol Branch of  Institute of\nAstronomy), Yu. Kuznietsova (Main Astronomical Observatory NASU), V.Petkov\n(Baksan Neutrino Observatory INR) and A. Pozanenko (IKI) on behalf of larger\nGRB follow up collaboration report:\n\nWe observed the field of the Swift GRB 100206A (Krimm  et al. GCN  10376)\nwith the Z-600 telescope of Mt.Terskol observatory in R-filter  on  Feb. 06\nstarting at (UT) 15:49. We obtained three series under variable weather\nconditions and improving seeing.\n\nThe upper limits of  point like object in combined images of  each series\nare presented below.\nThe photometry is based on the USNO-B1.0 reference stars 1032-0043920\n(assuming  R2=15.76) and 1031-0041081 (R2=15.78):\n\nT0+     Filter, Exposure, mag.\n(mid, d)             (s)\n\n0.1034    R  10x120   >20.5\n0.1235    R  20x120   >20.8\n0.1631    R  20x120   >21.4\n\nThe nearby galaxy (Miller et al., GCN 10377, Bhattacharya et al., GCN 10380,\nGuziy et al., GCN 10384, Leloudas et al., GCN 10387, Cenko et al., GCN\n10389, Morgan et al., GCN 10390, Mao et al. GCN 10392, Nicuesa et al. GCN\n10396) is detected in last series in coordinates (J2000) RA=03 08 39.17\nDec=+13 09 28.7  +/-0.5\" and  magnitude R=21.3 +/-0.3. No objects is\ndetected in enhanced XRT error circle (Goad et al. GCN 10378)."
}