{
  "submitter": "Moskvitin Alexander at SAO RAS <mosk@sao.ru>",
  "subject": "GRB 230818A: further SAO RAS Zeiss-1000 observations",
  "createdOn": 1692473754026,
  "bibcode": "2023GCN.34495....1M",
  "submittedHow": "email-legacy",
  "circularId": 34495,
  "eventId": "GRB 230818A",
  "body": "A. S. Moskvitin (SAO RAS), V. P. Goranskij (SAI MSU),\nreport on behalf of the GRB follow-up team.\n\nWe observed the field of GRB 230818A (Fermi GBM team, GCN 34478;\nTohuvavohu et al., GCN 34479) with the 1-m telescope of SAO RAS\nZeiss-1000 equipped with the CCD photometer. We obtained\n4 x 300 sec. images in Rc band on August 19, 17:42:30--18:07:26 UT.\n\nThe OT (Lipunov et al., GCNs 34476, 34477, 34481, 34482;\nGompertz et al., GCN 34480; Moskvitin et al., GCN 34483;\nMalesani et al., GCN 34485; Siegel and Tohuvavohu, GCN 34486;\nPankov et al., GCN 34487; Quadri and Strabla, GCN 34488;\nKlose et al., GCN 34491) is marginally detected with\nthe brightness of R = 23.0 +/- 0.3 (t_mid - t0 = 0.76903 days).\n\nThis preliminary photometry is based on nearby USNO-B1 stars (R2 mag).\nThe magnitude of the OT is not corrected for MW extinction.\n\n"
}