GCN Circular 37350
Subject
GRB 240828B: GMG Optical Upper Limit
Date
2024-08-30T09:03:28Z (a month ago)
From
wangbaiting@ynao.ac.cn
Via
Web form
B.-T. Wang, R.-Z. Li, F.-F. Song, J. Mao, K.-X. Lu and J.-M. Bai (YNAO, CAS) report:
We observed the field of GRB 240828B (SVOM/ECLAIRs, T0 at 2024-08-28T13:12:43, GCN 37318) using the GMG-2.4m telescope at the Lijiang Observatory. The observation began at 2024-08-28T19:21:41.934, about 6.13 hours after the trigger.
No new reliable optical counterpart was detected within the 2.6-arcsec Swift/XRT error circle (GCN 37334), down to a 5-sigma limiting magnitude of sdss-r ~ 21.7 mag, derived from calibration against the Pan-STARRS DR1 field stars.
We acknowledge the staff at the Lijiang Observatory for conducting the observation.