TITLE: GCN CIRCULAR NUMBER: 45157 SUBJECT: IceCube-260712A: LAST optical follow-up observations of the IceCube neutrino candidate DATE: 26/07/14 15:05:38 GMT FROM: Simone Garrappa at Weizmann Institute of Science <simone.garrappa@weizmann.ac.il> S. Garrappa (WIS), R. Konno (WIS), E. A. Zimmerman (WIS), A. Horowicz (WIS), E. O. Ofek (WIS), S. Ben-Ami (WIS), D. Polishook (WIS), O. Yaron (WIS), S. Fainer (WIS), A. Krassilchtchikov (WIS), Y. M. Shani (WIS), E. Segre (WIS), A. Gal-Yam (WIS), and S. Spitzer (WIS) on behalf of the LAST Collaboration. We report observations of the IceCube Bronze neutrino candidate IC-260712A (GCN#45141) with the Large Array Survey Telescope (LAST, Ofek et al. 2023; Ben-Ami et al. 2023). We observed the field of IC-260712A using four telescopes (one unit), each with a FoV of 7.4 sq. deg and no filter (clear - similar to the GAIA Bp band) over several epochs. In each epoch, we stack 20 x 20 s images. We began observations on 13 07 2026 at 18:54:08 UTC (T-T0 = 31.8 hours). The observations covered the full 90% neutrino footprint reported in GCN#45141 with a single LAST telescope. We find no candidate transient optical counterpart in the automatic transient-detection pipeline (Konno et al. 2026). For each epoch, the average 5-sigma limiting magnitude in the neutrino footprint, is 20.1 (AB). LAST is a survey telescope array of the Weizmann Astrophysical Observatory (https://www.weizmann.ac.il/wao/). View this GCN Circular online at https://gcn.nasa.gov/circulars/45157. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...