TITLE: GCN CIRCULAR NUMBER: 38425 SUBJECT: EP241201a: NOT optical observations DATE: 24/12/03 06:06:27 GMT FROM: Dong Xu at NAOC/CAS <dxu@nao.cas.cn> X. Liu, S.Q. Jiang, S.Y. Fu, Z.P. Zhu, J. An, D. Xu (NAOC), J.P.U. Fynbo (DAWN/NBI), A.H. de la Fuente, A.G. Theil (NOT) report: We observed the field of EP241201a detected by EP-WXT (Chen et al, GCN 38415) using the 2.56-m Nordic Optical Telescope (NOT) equipped with the ALFOSC camera. Observations started at 2024-12-02T19:53:15, i.e., ~ 22.9 hrs after the EP-WXT trigger, and 5x200 s Sloan r-filter images were obtained. No reliable optical transient is found within the EP-WXT 2.34 arcmin error circle (Chen et al, GCN 38415) after performing image differencing using the DESI Legacy Survey as template, down to a 5-sigma upper limit of r > 22.5, calibrated with nearby Pan-STARRS stars and not corrected for Galactic extinction. In addition, the plausible optical transient candidate reported by Kinder (Lee et al, GCN 38418) is not present in our stacked image. View this GCN Circular online at https://gcn.nasa.gov/circulars/38425. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...