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GCN Circular 37306

Subject
GRB 240825A: GMG Continued Optical Observation on the Second Night
Date
2024-08-27T02:34:35Z (3 months ago)
From
wangbaiting@ynao.ac.cn
Via
Web form
B.-T. Wang, F.-F. Song, R.-Z. Li, J. Mao, Y.-X. Xin, and J.-M. Bai (YNAO, CAS) report:

We observed the field of GRB 240825A (Gupta et al., GCN 37274, T0 at 2024-08-25T15:52:59) for the second time using the GMG-2.4m telescope at the Lijiang Observatory. The observation began at 2024-08-26T15:14:04, about 23.4 hours after the trigger.  A optical counterpart was still observable.   

The preliminary analysis results are shown as follows:
+----------------+------------+----------+--------------+----------------+
|  Tmid-T0 [hr]  |  Exp. [s]  |  Filter  |     Mag      |  5-sigma U.L.  |
+================+============+==========+==============+================+
|      23.4      |    1800    |  sdssr   |21.34 +/-0.09 |   22.3         |
+----------------+------------+----------+--------------+----------------+ 
We acknowledge the staff at the Lijiang Observatory for their efforts in conducting the observation.

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