GRB 241029A: SAO RAS optical observations

We observed the field of GRB 241029A (Fermi GBM team, GCN 37932; Schanne et al., GCN 37934; Wang et al., GCN 37935; Myers and Godwin, GCN 37945; Bernardini et al., GCN 37946) with the 1-m telescope of SAO RAS equipped with the CCD-photometer. We obtained 6 x 300 sec. images in Rc band on October 29, 18:39:32--19:13:23 UT (16.6079 hours after the burst). The OT (Jiang et al., GCNs 37937, 37940; Lin et al., GCN 37939; Francile et al., GCN 37941; Ackley et al., 37943; Odeh and Guessoum, GCN 37944; Adami et al., GCN 37948; Fernandez et al., GCN 37950) is clearly detected in our stacked frame with the brightness of R = 20.98 +/- 0.05 (R_lim = 23.0). This preliminary photometry is based on nearby SDSS stars (magnitudes converted with Lupton 2005 equations) and not corrected for the Galaxy extinction.