GCN Circular 44496
Subject
EP260507a: NOT optical observations
Event
Date
2026-05-08T01:42:18Z (a day ago)
From
sqjiang at NAOC <sqjiang@bao.ac.cn>
Via
Web form
S.Q. Jiang, L.B. He, Z.P. Zhu, J. An, X. Liu, D. Xu (NAOC), S.Y. Fu (HUST), J. P. U. Fynbo (DAWN/NBI), A. L. Bouquin (NOT) report:
We observed the field of EP260507a detected by EP (Fu et al., GCN 44488), using the 2.56-m Nordic Optical Telescope (NOT) equipped with the ALFOSC camera. We obtained 3 x 300 s frames in the Sloan g, r, i-band, respectively.
The optical afterglow (Corcoran et al., GCN 44489; Sankar et al., GCN 44490; Jiang et al., GCN 44491; Kumar et al., GCN 44492; Eyles-Ferris et al., GCN 44495) is detected in our stacked images. Preliminary photometry results are as follows:
Tmid-T0(hr) Mag MagErr Filter
9.54 23.04 0.12 r
9.82 23.61 0.17 g
10.10 22.77 0.17 i
calibrated with Pan-STARRS DR2 stars in the field and not corrected for Galactic extinction.