{
  "bibcode": "2009GCN.10248....1K",
  "body": "K. Kinugasa, S. Honda, O. Hashimoto, H. Takahashi, H. Taguchi\n (Gunma Astronomical Observatory) report:\n\n The position of GRB 091127 (Troja et al., GCN 10191) was observed\nwith the 150 cm telescope of Gunma Astronomical Observatory.\nStarting at 13:45:44 and 14:04;55 UT on Nov.28 ( about 14.3 and\n14.7 hours after the trigger), Ic and Rc frames were acquired\nfor sets of 5 x 3-min and  5 x 3-min exposures, respectively.\n\n We detected the optical counterpart (e.g., Smith et al., GCN 10192;\n Immler et al., GCN 10193) in all frames. We estimated the Rc and Ic\nmagnitudes relative to USNO-B1.0 R2 and I magnitudes, respectively.\n\nmid-UT     T0+(d)    exp        mag.\n-----------------------------------------------\n13:54:51   0.6035    5x3min     Rc=18.37+-0.13\n14:16:39   0.6187    5x3min     Ic=18.62+-0.32\n-----------------------------------------------\n\n The R magnitude is well fitted with the fading trend from the other\nobservations (e.g., Xu et al. GCN 10205; Sndreev et al. GCN 10207;\nHaislip et al. GCN 10219).",
  "circularId": 10248,
  "createdOn": 1260003585000,
  "email": "kinugasa@astron.pref.gunma.jp",
  "subject": "GRB 091127: GAO 150cm telescope Optical Observation",
  "submitter": "Kenzo Kinugasa at Gunma Astro. Obs/Japan  <kinugasa@astron.pref.gunma.jp>",
  "eventId": "GRB 091127"
}