TITLE: GCN CIRCULAR NUMBER: 38665 SUBJECT: EP241223a DATE: 24/12/24 18:00:05 GMT FROM: Xinglong Observatory at National Astronomical Observatories (NAOC), Chinese Academy of Sciences (CAS) xinglong@nao.cas.cn
Junjie-Jin (NAOC), Yiming-Mao(NAOC), Zheng-Jie (NAOC), Haiyang-Mu(NAOC), Yinan-Zhu (NAOC), Qi-Zhao (NAOC), Feng-Xiao (NAOC), Zhou-Fan (NAOC), Hong-Wu (NAOC) report: We observed the field of the X-ray transient, EP241223a by the Xinglong 2.16-m telescope located at Xinglong, Hebei, China. Following the detection of EP241223a by EP-WXT (Li et al., GCN 36405), we observed the field of EP241223a using the 2.16-m telescope at Xinglong Observatory, NAOC. We obtained 6x600s clear-band frames with a median time of 2024-12-24T14:16:34, 10 hr after the EP trigger. No uncatalogued optical transient is detected in the stacked images within the 3 arcmin EP/WXT error circle (Li et al., GCN 36405), down to 5-sigma limiting magnitudes of g ~ 22.5, calibrated with Pan-STARRS sources in the field. Also there is no apparent brightening for the catalogued sources within the error circle.
View this GCN Circular online at https://gcn.nasa.gov/circulars/38665. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...