TITLE: GCN CIRCULAR NUMBER: 45274 SUBJECT: GRB 260802A: LCO optical upper limits DATE: 26/08/02 13:15:26 GMT FROM: SVOM_group <svomgroup@bao.ac.cn> Y.Y. Shi (GXU), C. Wu, L.P. Xin (NAOC), A. Saccardi, D. Turpin (CEA/Irfu), R.C. Chen, W.J. Xie (BA-F), report on behalf of the SVOM mission team: We observed the field of GRB 260802A (SVOM burst-id sb26080210) detected by SVOM (Feng et al., GCN 45270) with the LCO 1m telescope at McDonald Observatory equipped with the Sinistro instrument. Our observation started on 2026-08-02 at 10:21:46 UT (about 58.6 min after the trigger) and we obtained 3x200 s exposures in the SDSS r filter. In the stacked image, we do not detect any new source within the SVOM/ECLAIRs error box. We measure the following upper limit calibrated against the Pan-STARRS DR1 catalog, and not corrected for Galactic extinction: r > 20.96 AB (5-sigma, mid-time 1.07 hr after the trigger). This project is funded by the SVOM collaboration. View this GCN Circular online at https://gcn.nasa.gov/circulars/45274. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...