TITLE: GCN CIRCULAR NUMBER: 42916 SUBJECT: EP251130A: Optical observation from 1.3m DFOT DATE: 25/12/01 08:45:09 GMT FROM: ANSHIKA GUPTA at ARIES <anshika05180@gmail.com> Anshika Gupta, Pankaj Pawar, Debalina Kar, Dhruv Jain, and Kuntal Misra (ARIES) report: We observed the field of EP251130A detected by Einstein Probe (Wu et al. 2025, GCN 42903) with the 1.3m Devasthal Fast Optical Telescope (DFOT), located at the Devasthal Observatory of the Aryabhatta Research Institute of Observational Sciences (ARIES), India. The observations were started on 22025-11-30 at 19:21:24 UT, i.e., ~8.22 hours after the EP trigger. We have taken multiple frames with an exposure time of 300s in the R filter. We stacked the images after the alignment. We detect the optical counterpart in our stacked image within the error box of Swift-XRT (Evans et al. 2025, GCN 42908). We obtain the following preliminary magnitude in the stacked image: Date Start_UT T_start-T0 (hour) Filter Exp time (s) Magnitude ====================================================================== 2025-11-30 19:21:24 ~8.22 R 300*12 22.20+/- 0.09 Our detection is consistent with Dornic et al. 2025 (GCN 42904); Lipunov et al. 2025 (GCN 42906); He et al. 2025 (GCN 42914). The magnitude is not corrected for the Galactic extinction in the direction of the burst. Photometric calibration is performed using the standard stars from the USNO-B1 catalog. View this GCN Circular online at https://gcn.nasa.gov/circulars/42916. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...