{
  "eventId": "EP261111a",
  "submittedHow": "email",
  "createdOn": 1794526877029,
  "circularId": 46242,
  "submitter": "Alexei Pozanenko at IKI, Moscow <grb.alex@gmail.com>",
  "subject": "EP261111a: AbAO and  Mondy observations, optical afterglow candidate",
  "body": "N. Pankov (IKI), A. Moskvitin (SAO), A. Pozanenko (IKI), R. Ya.\nInasaridze (AbAO),  E. Klunko (ISTP), A. Volnova (IKI)  report on\nbehalf of IKI-GRB-FuN:\n\nWe observed the field of the Einstein Probe transient EP261111a (Huang\net al., GCN 46226; Li et al., GCN 46235) with  AS-32 telescope of\nAbastumani Observatory (AbAO) and  AZT-33IK of Sayan Solar Observatory\n(Mondy) started (UT) 2026-11-11T17:06:33 (t_mid - T0 = 4.3 hours)\nand 2026-11-11T20:30:41  (t_mid - T0 =7.6 hours)   respectively.\n\nAfter the subtraction of the PS1 template in the refined FXT error\ncircle (Li et al., GCN 46235) in the difference image from AS-32 we\nfound single uncatalogued object with the coordinates of (J2000) R. A.\n= 02:52:28.0, Dec. = +44:26:05.3  and brightness of R = 22.0 +/- 0.3.\nWe do not detect this object in the AZT-33IK stacked image. The\nobservation details are as follows:\n\nDate        UT start  t-T0      Exp,   Filter Obj      Err  UL     Telescope\n                     (mid,days) (n*s)                      (3sigma)\n2026-11-11  17:06:33  0.17909  60*60   R      22.0    0.3  22.1   AS-32\n2026-11-11  20:30:41  0.31635  60*60   R      n/d      n/d  22.5   AZT-33IK\n\nThis preliminary photometry (Vega) is based on nearby SDSS stars\n(Lupton 2005 transformation) and not corrected for Galactic\nextinction.\n\nWe suggest that this object could be the afterglow of EP261111a.\n\nOur results are in agreement with the non-detections by Junjie-Jin et al.,\nGCN 46227; Buckley et al., GCN 46230; Eyles-Ferris et al., GCN 46236.\n"
}