{
  "submittedHow": "web",
  "subject": "GRB 251014A: SAO RAS optical upper limit",
  "format": "text/plain",
  "submitter": "Alexander Moskvitin at SAO RAS <mosk@sao.ru>",
  "body": "A. S. Moskvitin, O. I. Spiridonova (SAO RAS),\nreport on behalf of GRB follow-up team.\n\nWe observed the field of the GRB 251014A (Ambrosi et al., GCN 42238;\nThe Fermi GBM team, GCN 42237; de Barra et al., GCN 42249) \nwith the 1-m SAO RAS telescope Zeiss-1000 equipped \nwith the CCD-photometer. We obtained 7 x 300 sec. images in Rc band \nunder mediocre weather conditions on 2025.10.14, 00:51:01--01:38:56 UT \n(t_mid - T0 = 0.77458 hours).\n\nWithin our FOV (covers ~80% of northern part of Swift-BAT error \ncircle) we do not detect any new source down to the limiting \nmagnitude of R_lim = 21.5. The field calibrated against nearby \nUSNO-B1.0 stars (R2 magnitudes) and not corrected for the Galactic \nextinction.",
  "eventId": "GRB 251014A",
  "circularId": 42250,
  "createdOn": 1760436363962,
  "bibcode": "2025GCN.42250....1M"
}