{
  "bibcode": "2020GCN.27838....1K",
  "body": "A. Kumar (ARIES), S. B. Pandey (ARIES), R. Gupta (ARIES), K. Misra (ARIES),\nA. Aryan (ARIES), A. Ghosh (ARIES), and Dimple (ARIES) report:\n\nWe carried out observation of Fermi GBM detected GRB 200528A (GCN 27831,\nAmbrosi et al., GCN 27832) with the 1.3m Devasthal Fast Optical Telescope\n(DFOT) at Devasthal observatory of Aryabhatta Research Institute of\nobservational sciencES (ARIES), India.\n\nThe observation was started on 2020-05-28T15:37:05 UTC. We observed a\nseries of 4 x 300s exposures using the Bessell I filter covering Swift XRT\nenhanced position (Evans et al., 27836).\n\nWe do not detect any new optical source within the Swift XRT enhanced error\ncircle in individual as well as in the stacked image (Adachi et al., GCN\n27834, Lipunov et al., GCN 27835 and Zhu et al., GCN 27837).\n\nWe obtained the 3-sigma upper limit as follows:\n\nT_start-T0(hrs) Start Date (UTC)  End Date (UTC)   Filter  Limit (mag)\n-----------------------------------------------------------------------------------------------\n5.161    2020-05-28T15:37:05  2020-05-28T15:58:42   I     20.2 +- 0.2\n\n\n\nPhotometry is done based on the USNO-B1.0 catalog. This magnitude is not\ncorrected for Galactic extinction in the direction of the GRB.",
  "circularId": 27838,
  "createdOn": 1590688378000,
  "email": "amitkundu515@gmail.com",
  "subject": "GRB 200528A: 1.3m DFOT Optical Upper Limits",
  "submitter": "Amit Kumar at ARIES, India  <amitkundu515@gmail.com>",
  "eventId": "GRB 200528A"
}