{
  "bibcode": "2013GCN.14489....1P",
  "body": "S. B. Pandey and Brajesh Kumar (ARIES Nainital India, on behalf of larger\nIndian GRB collaboration)\n\nWe observed Swift GRB 130427A field (Maselli et al., GCN 14448) using 1.04m\ntelescope at ARIES Nainital on 2013-04-27 starting at 14:25:16 UT in\nUBV(RI)_c filters. Several frames were obtained in average sky conditions.\n\nWe clearly detect the bright optical counterpart of GRB 130427A (Maselli et\nal. GCN 14448, Elenin et al. GCN 14450) in each individual exposures.\n\nThe preliminary photometry is as following:\n\n (UT)Start    filter    exp(sec)      mag\n 14:25:16       B        300        16.61 +/- 0.06\n 14:53:36       I         200       14.83 +/- 0.05\n\nThe photometry was performed in comparison to nearby USNO- B1 stars. Our\nobservations seem to follow the power-law decay exponent ~ -0.9 as noticed \nby Perley and Cenko GCN 14456.\n\nFurther observations are going on. This massage may be cited.",
  "circularId": 14489,
  "createdOn": 1367149695000,
  "email": "shaship@umich.edu",
  "subject": "GRB 130427A, Optical Observations",
  "submitter": "Shashi Bhushan Pandey at ROTSE  <shaship@umich.edu>",
  "eventId": "GRB 130427A"
}