{
  "bibcode": "2010GCN.10700....1B",
  "body": "I. Bikmaev (KSU/AST), I. Khamitov (TUG),\nS. Melnikov, N. Sakhibullin (KSU/AST),\nR. Burenin, M. Pavlinsky, R. Sunyaev (IKI),\nZ. Eker (TUG), U. Kiziloglu (METU), E. Gogus (Sabanci Uni.)\n\nreport:\n\nThe optical afterglow of GRB 100418A (Marshall et al., GCN 10612, Filgas\net al., GCN 10617) was observed with Russian-Turkish 1.5-m telescope\n(RTT150, Bakirlitepe, TUBITAK National Observatory, Turkey) in April\n23/24 and April 27/28, 2010, in partially cloudy conditions. We obtained\none useful 900 sec image in Rc-band in April 24 and nine 900 sec images\nin April 28. In spite of bright Moon in April 27/28 observations OT is\nclearly detected in combined image.\n\nIn the Table below we give our Rc estimates of the OT brightness\nrelative to the nearby USNO-B1.0 star 1014-0271368 (R2Mag=17.32).\n\nDate     UT  (T-T0),h    Rc      err\nApr.24 00:20 123.1       20.6  +/-0.10\nApr.28 00:50 220.0       21.25 +/-0.05\n\nPreliminary Rc-light curve can be found at:\nhttp://hea.iki.rssi.ru/grb/100418a/indexeng.html\n\nOT is still brighter compared with its host galaxy (Malesani, GCN10621)\nand further spectroscopic and photometric observations of this event are\nvery important to check possible SN contribution in the OT flux.\n\n\n-- \nThis message has been scanned for viruses and\ndangerous content by MailScanner, and is\nbelieved to be clean.",
  "circularId": 10700,
  "createdOn": 1272488658000,
  "email": "irekk@tug.tug.tubitak.gov.tr",
  "subject": "GRB 100418A: RTT150 optical observations",
  "submitter": "Irek Khamitov at TUG  <irekk@tug.tug.tubitak.gov.tr>",
  "eventId": "GRB 100418A"
}