TITLE: GCN CIRCULAR NUMBER: 37012 SUBJECT: EP240801a: SAO RAS optical observations DATE: 24/08/02 10:06:40 GMT FROM: Moskvitin Alexander at SAO RAS mosk@sao.ru
A. S. Moskvitin and O. I. Spiridonova (SAO RAS) report on behalf of the GRB follow-up team.
We observed the field of the fast X-ray transient EP240801a (Zhou et al., GCN 36997) with the SAO RAS 1-meter telescope Zeiss-1000 equipped with the CCD-photometer. We obtained 5 x 300 sec frames in Rc band on 2024-08-01T23:55:51 -- 2024-08-02T00:54:48 (UTC), t_mid - T0 = 15.32 hours.
The OT (Fu et al., GCN 36998; Li et al., GCN 36999; Zheng et al., GCN 37000; Aryan et al., GCN 37002; An et al., GCN 37004; Perez-Fournon et al., GCN 37007; Malesani et al., GCN 37008; Zhu et al., GCN 37010) is clearly detected in the stacked frame with the brightness of R = 21.7 +/- 0.1, calibrated against nearby Pan-STARRS stars and not corrected for Galactic extinction.
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