TITLE:   GCN CIRCULAR
NUMBER:  45966
SUBJECT: EP261006a / AT 2026aetp: Optical follow-up with the 1.3-m DFOT
DATE:    26/10/16 18:38:05 GMT
FROM:    pawarpankaj1492@gmail.com

Pankaj Pawar, Sarvesh Yadav, Dhruv Jain, Anshika Gupta, Debalina kar and Kuntal Misra (ARIES, Nainital, India) report:

We observed the field of EP261006a (Lao et al., GCN 45826) and its optical
counterpart AT 2026aetp (Eyles-Ferris et al., GCN 45831) with the 1.3-m
Devasthal Fast Optical Telescope (DFOT), India, on 2026 October 15.
Observations started at 18:03:52 UT. We obtained six 300-s exposures in each
of the V, R and I filters.

We detect the optical counterpart in the stacked difference images, using
archival Pan-STARRS and Legacy Survey images as references. Our preliminary
PSF photometry is:

Mid-time (UT)          Tmid-T0 (d)  Filter  Exposure (s)  Mag (Vega)
2026-10-15 18:19:04     9.02022      R       6 x 300     18.68 +/- 0.13
2026-10-15 18:50:59     9.04239      I       6 x 300     18.96 +/- 0.18
2026-10-15 19:33:34     9.07196      V       6 x 300     18.53 +/- 0.15

T0 is 2026-10-06 17:49:57 UT (Lao et al., GCN 45826). Photometry was
calibrated against nearby Pan-STARRS stars transformed to approximate Johnson
V and Cousins R/I magnitudes on the Vega system. The uncertainties include
estimated subtraction systematics. Magnitudes are not corrected for Galactic
extinction.