TITLE: GCN CIRCULAR NUMBER: 37017 SUBJECT: EP240801a: further SAO RAS optical observations DATE: 24/08/02 23:12:07 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 9 x 300 sec frames in Rc band on 2024-08-02T20:14:00 -- 2024-08-02T22:09:01 (UTC), t_mid - T0 = 1.5038 days. 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; Quirola-Vasquez et al., GCN 37013; Moretti et al., GCN 37014; Turpin et al., GCN 37015; Pankov et al., GCN 37016) is clearly detected in the stacked frame with the brightness of R = 22.17 +/- 0.15, calibrated against nearby Pan-STARRS stars and not corrected for Galactic extinction. View this GCN Circular online at https://gcn.nasa.gov/circulars/37017. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...