{
  "bibcode": "2011GCN.12527....1D",
  "body": "D. Denisenko (IKI, Moscow), V. Gerke and S. Korotkiy (Ka-Dar\nobservatory, Russia) report:\n\nPosition of GRB 111103B (Grupe et al., GCN 12519; Barthelmy et al.,\nGCN 12524; Goad et al., GCN 12525) was observed by 40-cm Djigit\ntelescope of Ka-Dar observatory's TAU station (Nizhniy Arkhyz,\nKarachay-Cherkessia) equipped with SBIG STL-11K CCD from 15:35 UT to\n16:04 UT on 2011 Nov. 03 (4.6-5.1 hr after the burst trigger). In\ntotal, 10 unfiltered 120-sec exposures were taken.\n\nThere are no new sources detected in the error box of GRB 111103B on\nthe combined image, as compared to Red DSS plate of similar depth. The\nlimiting magnitude of the combined image (SNR=3) is R~20.2. The sum of\nnine best frames (effective exposure of 18 minutes centered at 15:50\nUT) is available at http://pics.livejournal.com/bigdenru/pic/000ak676/\n(5'x5' crop).\n\nWe have also measured the light curve of the nearby star G 20-10 =\n2MASS 17424702+0136326 (J=11.060+/-0.023, K=10.232+/-0.023) to check\nfor its variability. The star has remained constant within 0.01 mag\nduring our 0.5 hr observations. It is far from saturation with no more\nthan 13000 ADU on the individual images.\n\nThis message can be cited.",
  "circularId": 12527,
  "createdOn": 1320342732000,
  "email": "d.v.denisenko@gmail.com",
  "subject": "GRB 111103B: optical observations from TAU, Ka-Dar",
  "submitter": "Denis Denissenko at IKI, Moscow  <d.v.denisenko@gmail.com>",
  "eventId": "GRB 111103B"
}