TITLE:   GCN CIRCULAR
NUMBER:  44902
SUBJECT: EP260610b: NOT optical observation
DATE:    26/06/11 02:42:23 GMT
FROM:    Zipei Zhu at NAOC <zpzhu@nao.cas.cn>

Z.-P. Zhu, X. Liu, L.-B. He, J. An, S.-Q. Jiang, D. Xu (NAOC), S.-Y. Fu (HUST),J.PU. Fynbo (DAWN/NBI) reports on behalf of a large collaboration:

We observed the field of EP260610b detected by EP (Wu et al., GCN 44895), using the 2.56m Nordic Optical Telescope (NOT) equipped with the ALFOSC camera. Observation started at 2026-06-10 22:20:33 UT, i.e.,  about 0.4 days post-burst, and a series of r-band frames were obtained.

The previously reported optical counterpart (Levan et al., GCN 44897; Xin et al., GCN 44900) is detected in our stacked images with a preliminary brightness of r ~ 22.5, calibrated with Pan-STARRS DR2 stars in the field and not corrected for Galactic extinction.