GRB 241029A: LCO optical detection

We observed the field of the GRB 241029A (Schanne et al., GCN #37934; Wang et al., GCN #37935; Myers & Godwin, GCN 37945) with the Sinistro instrument mounted on the 1-m telescope of the LCO network, located at the Siding Spring Observatory, Australia. Observations started on 2024 October 29 at 09:21:56 UT (7.03 hr after the GRB trigger). We obtained a sequence of 3x180 s images in the SDSS-r filter. In the stacked r-band image, we clearly detect the optical afterglow previously reported by other facilities (Jiang et al., GCN #37937; Lin et al., GCN #37939; Jiang et al., GCN #37940; Francile et al., GCN #37941; Ackley et al., GCN #37943; Odeh et al., GCN #37944; Adami et al., GCN #37948; Agui Fernandez et al., GCN #37950; Moskvitin & Spiridonova, GCN #37954; Saikia et al., GCN #37961; Qiu et al., GCN #37994) and by Swift-XRT (Bernardini et al., GCN #37946). We measure a preliminary magnitude of r = 20.32 +/- 0.07 mag (AB), calibrated against nearby stars from the Pan-STARRS catalog. This project has received funding from the European Union's Horizon 2020 research and innovation program under grant agreement No 101004719.