{
  "submitter": "Alina Volnova at IKI RAS <alinusss@gmail.com>",
  "format": "text/plain",
  "body": "M. Chutchikova (HSE), A. Volnova (IKI),  A. Pozanenko (IKI), E. Klunko (ISTP), N. Pankov (IKI)  report on behalf of IKI-GRB-FuN:\n\nWe observed the EP-WXT trigger 01709258652 (Yang et al., GCN 43849) with the AZT-33IK 1.5m telescope of the Mondy observatory starting on 2026-02-26 (UT) 21:07:17, i.e., ~8 hours after the trigger, and taking several 120-seconds frames in the R band. The photometry of suggested flare star LP 435-538 (High Proper Motion Star; Yang et al., GCN 43849; Wu et al., GCN 43857; Fang et al., GCN 43889) do no exhibit any significant variability within 1 hour of our observations.\nPreliminary photometry and observational details are the following:\n\nDate        UT start  t-T0      Exp.    Filter Obj.   Err.  UL      Site/Telescope\n                     (mid,days) (n*s)                      (3sigma)\n2026-02-26  21:07:17  0.32452   30*120  R      14.10  0.01  23.2    Mondy/AZT-33IK\n\nThe photometry is based on nearby USNO-B1.0 stars (R2-magnitudes) and is not corrected for Galactic extinction. Our measured R magnitude is consistent with the photometry of the USNO-B1.0 star 1099-00207147 (R2 = 14.16) corresponding by the coordinates to LP 435-538.",
  "createdOn": 1776951079095,
  "subject": "The EP-WXT trigger 01709258652: Mondy optical observations",
  "submittedHow": "web",
  "bibcode": "2026GCN.44400....1C",
  "circularId": 44400
}