TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2961 SUBJECT: GRB 041224 and GRB 041226: BOOTES-2 simultaneous observations DATE: 05/01/18 19:01:22 GMT FROM: Alberto Castro-Tirado at Inst.de Astro. de Andalucia A. J. Castro-Tirado, M. Jelínek, A. de Ugarte Postigo, (IAA-CSIC Granada), S. Vitek (Czech Technical University, Prague), P. Kubanek (Astronomical Institute of the Academy of Sciences, Ondrejov), T. J. Mateo Sanguino (Universidad de Huelva), J. M. Castro Cerón (U. Copenhagen), T. Soria (EELM-CSIC, Málaga) and J. Fabregat (Universidad de Valencia) report: The BOOTES-2 very wide field camera, located at the Estación Experimental de La Mayora (EELM-CSIC) in Málaga, observed the two regions of the sky containing the SWIFT/BAT error boxes for GRB 041224 (Barthelmy et al. GCN 2908) and GRB 041226 (Krimm et al. GCN 2914) as part of its routine observing schedule. For GRB 041224 a 30 s exposure started at 20:21:00 UT (3 s after the onset of the 50 s long burst), with the following frame starting at 20:22:00 UT. For GRB 041226 the 30 s exposure started at 20:34:00 (19 s prior to the onset of the 20 s main emission peak). Limiting (unfiltered) magnitudes of 8.5 and 7.0 respectively (due to the presence of the full moon) are derived for any promt optical flash arising from either of these two events. This message can be quoted.