{
  "bibcode": "2024GCN.37346....1M",
  "submitter": "Moskvitin Alexander at SAO RAS <mosk@sao.ru>",
  "body": "A. S. Moskvitin and O. I. Spiridonova (SAO RAS)\nreport on behalf of the GRB follow-up team.\n\nWe observed the field of GRB 240828B (Le Provost et al., GCN 37318)\nwith the SAO RAS 1-meter telescope Zeiss-1000 equipped with\nthe CCD-photometer on August 29, 19:36:46 -- 20:00:01 UT\n(t_mid - T0 = 30.594 hours = 1.2748 days). We obtained several images\nin Rc band with a total exposure of 1040 seconds.\n\nWithin the XRT error circle (Page et al., GCN 37334) we didn't detect\nany source down to a limiting magnitude of R_lim = 21.0 as well as\nKAIT team (Zheng et al., GCN 37345).\n\nThe field was calibrated against nearby SDSS stars (magnitudes\nconverted with Lupton 2005 equations) and not corrected for the Galaxy\nextinction.\n",
  "createdOn": 1724976612088,
  "subject": "GRB 240828B: SAO RAS optical upper limit",
  "eventId": "GRB 240828B",
  "circularId": 37346,
  "submittedHow": "email-legacy"
}