[vsnet-grb-info 12747] GRB 121226A: BOOTES-4/MET optical observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  14106
SUBJECT: GRB 121226A: BOOTES-4/MET optical observations
DATE:    12/12/26 22:35:11 GMT
FROM:    Alberto Castro-Tirado at Inst.de Astro. de Andalucia  <ajct at iaa.es>

S. Guziy (Mykolaiv Nat. Univ.), O. Lara, R. Cunniffe, J. Gorosabel, M.
Jelinek (IAA-CSIC), P. Kubanek (IP AS CR), Y. Fan, X. Zhao, J. Bai, C.
Wang, Y. Xin (Yunnan Nacional Astronomical Observatory), Ch. Cui (Beijing
National Astronomical Observatory) and A. J. Castro-Tirado (IAA-CSIC), on
behalf of a larger collaboration, report:

“Following the detection of GRB 121226A by Swift (Krimm et al. GCNC
14105), the 0.6m BOOTES-4/MET robotic telescope at the Lijiang
Astronomical Observatory (China) responded automatically to the trigger
alert at 19:10:21 UT, 9 s after the GCN reception (i.e. 36 s after the
onset of the event). After initial 0.5 s exposures, the first 19
unfiltered images (5 s exposure time each) starting 6 m 24 s postburst,
show no optical afterglow at the refined XRT position down to 19th mag
limiting magnitude (for the combined image). Observations are ongoing.”