{
  "createdOn": 1776667899852,
  "eventId": "AT2026jpw",
  "submittedHow": "web",
  "body": "N. Pankov (IKI), V. Rumyantsev (CrAO), E. Klunko (ISTP), A. Pozanenko (IKI), A. Volnova (IKI) report on behalf of IKI-GRB-FuN:\n\nWe continued optical observations of the field of AT2026jpw (O'Neill et al., GCN 44301; Corcoran et al., GCN 44303; Moskvitin and Spiridonova, GCN 44304; Xu et al., GCN 44305; The COLIBRÍ team, GCN 44306; Sosnovskij et al., GCN 44309; Ma et at., GCN 44314; Pankov et al., GCN 44316) in the R band with the Shajn 2.6-meter telescope (ZTSh) of the Crimean Astrophysical Observatory (CrAO) and the 1.5-meter AZT-33IK telescope of the Sayan Solar Observatory (Mondy). The observations began on 2026-04-16  20:53 UT, i.e. ~2.92 days since GOTO detection at CrAO and on 2026-04-18 14:47 UT (~4.67 days since GOTO detection) at Mondy. The series of 38x120s exposures were taken by ZTSh/CrAO and 35x120s exposures were taken by AZT-33IK/Mondy. The optical counterpart is clearly detected in the co-add image from CrAO, but not detected by AZT-33IK.\n\nThe preliminary photometry and observation details are provided below:\n\nDate UT    start    t-T0    Exp.   Filter OT      Err.  UL(3sigma) Telescope/Site\n(mid, days) (s)\n2026-04-16 20:53:30 2.92638 38x120 R      22.11   0.02  23.7       ZTSH/CrAO\n2026-04-18 14:47:18 4.66999 35x120 R      n/d     n/d   22.8       AZT-33IK/Mondy\n\nThe photometry is calibrated using nearby stars from USNO-B1.0 (see Moskvitin and Spiridonova, GCN 44304) and has not been corrected for the Galactic extinction.",
  "submitter": "Nicolai Pankov at IKI <colinsergesen@gmail.com>",
  "subject": "GOTO26djh/AT2026jpw: CrAO and Mondy optical observations of the transient",
  "format": "text/plain",
  "circularId": 44353
}