{
  "bibcode": "2011GCN.11594....1P",
  "body": "Won-Kee Park, Myungshin Im, Changsu Choi (Seoul National Univ.),\nHyeonju Jeong, Juhee Lim, and Soojong Pak (Kyung Hee Univ.)\n\n\nThe field of GRB 101225A was observed with CQUEAN, an optical\nCCD camera attached at the 2.1m telescope at McDonald Observatory,\nUSA. The observation was carried out from 01:16:23 UT, Dec. 26, 2010,\nwith i, r, z, and Y filters, with exposures of 3 * 300 secs for each\nband.\n\nThe afterglow was clearly visible on i and r-band images at\nthe same position reported by Xu et al.(GCN 11495). We obtained\nthe preliminary magnitude of the afterglow on the stacked i-band\nimage calibrated with the neighboring USNO B-1.0 stars:\nR = 22.60 +- 0.19 at 01:42:47 UT. Further analysis of the data is\nongoing.",
  "circularId": 11594,
  "createdOn": 1295711540000,
  "email": "wkpark@astro.snu.ac.kr",
  "subject": "GRB 101225A: CQUEAN optical observation",
  "submitter": "Won-Kee Park at Seoul Nat U/Dept.Physics and Astronomy/CEOU  <wkpark@astro.snu.ac.kr>",
  "eventId": "GRB 101225A"
}