TITLE:   GCN CIRCULAR
NUMBER:  46278
SUBJECT: GRB 261114A: NOT optical observations
DATE:    26/11/14 22:11:24 GMT
FROM:    luca.izzo@inaf.it

B. Schneider (LAM), L. Izzo (INAF/OACN & DARK/NBI), D. B. Malesani (DAWN/NBI and Radboud U.), A. Saccardi (CEA/Irfu), A. Martin-Carrillo (UCD), A. Caballero Almagro (NOT), A. S. Mårtensson (NOT) report on behalf of a larger collaboration:

We observed the optical counterpart (Wu et al., GCN 46269; Zhao et al., GCN 46272; Li et al., GCN 46273; Li et al., GCN 46277) of the SVOM/ECLAIRs GRB 261114A (Li et. al., GCN 46267) using the Nordic Optical Telescope (NOT) equipped with the ALFOSC instrument. Observations were performed starting at 20:54:24 UT on 14 November 2026 (about 11.5 hr after the SVOM trigger), and consisted of 3x300 s in the SDSS-r band.

In our stacked image, we measure the preliminary AB magnitude:

r = 22.38 ± 0.13

This magnitude is calibrated using nearby objects from the SkyMapper catalog and is not corrected for Galactic extinction.