GCN Circular 35339

Y.-D. Hu, E. Fernandez-Garcia, I. Perez-Garcia, M.D. Caballero-Garcia, R. Sanchez-Ramirez, S. Guziy, S.-Y. Wu and A. J. Castro-Tirado (IAA-CSIC, Granada), P. J. Meintjes and H. J. van Heerden (UFS, South Africa), A. Martin-Carrillo and L. Hanlon (UCD, Ireland) and C. J. Perez del Pulgar (UMA, Malaga), on behalf of a larger collaboration, report:

Following the detection of GRB 231214A by Swift (Brivio et al. GCNC 35335) and Fermi (Fermi GBM team GCNC 35334), the BOOTES-6/DPRT 0.6m robotic telescope at Boyden Observatory in Maselspoort (South Africa) automatically observed the GRB location starting on Dec. 14, 20:42 UT (~ 18 min after trigger). No new optical source is detected on the co-added images (11 x 10 s, clear-filter) within the Swift/XRT error region down to 19.1 mag, which is consistent with both reports from UVOT (Brivio et al. GCNC 35335) and MASTER (Lipunov et al. GCNC 35336).

We thank the staff at Boyden Observatory for their excellent support.