{
  "bibcode": "2012GCN.12923....1Y",
  "body": "Kenshi Yanagisawa, Daisuke Kuroda, Yasuhiro Shimizu, Kiichi Okita\n(OAO/NAOJ), Michitoshi Yoshida (Hiroshima-U), Kouji Ohta(Kyoto-U),\nand Nobuyuki Kawai(Tokyo Tech.) report on behalf of the MITSuME\ncollaboration:\n\nWe observed the field of GRB120211A (Sonbas et al., GCNC 12920) in\nKs-band with a wide-field NIR camera at Okayama  Astrophysical\nObservatory (Japan). The camera has an effective aperture of 0.91m.\n\nObservations started from 12:08 UT on 11th Feburuary, 10.1 min after\nthe BAT trigger, to 13:22 UT.  The total exposure of 60 min was\nsuccessfully obtained.\n\nIn our co-add image, we did not find any new point source within the\nenhanced XRT error circle (Goad et al., GCNC 12922) down to limiting\nmagnitude of  Ks= 15.5(Vega, S/N=3). The photometric calibration was\nmade against 2MASS field stars.\n\nT0+[min]    MID-UT     T-EXP[min]      Ks\n---------------------------------------------------\n  +47.1     12:45        60.0       >15.5 (S/N=3)\n---------------------------------------------------\nT0+ : Elapsed time after the burst [sec]\nT-EXP: Total Exposure time [sec]",
  "circularId": 12923,
  "createdOn": 1328976705000,
  "email": "yanagi@oao.nao.ac.jp",
  "subject": "GRB 120211A: MITSuME Okayama Ks-band upper limit",
  "submitter": "Kenshi Yanagisawa at OAO/NAOJ  <yanagi@oao.nao.ac.jp>",
  "eventId": "GRB 120211A"
}