TITLE:   GCN CIRCULAR
NUMBER:  15685
SUBJECT: GRB 140102A: BOOTES-4 early optical observations
DATE:    14/01/05 15:29:18 GMT
FROM:    Alberto Castro-Tirado at Inst.de Astro. de Andalucia  <ajct@iaa.es>

S. Guziy (Nikolaev Univ. Obs., Ukraine), J. Gorosabel (UPV/EHU-IAA/CSIC,
Spain), A. J. Castro-Tirado, R. Cunniffe, M. Jelínek, S. Jeong, O.
Lara-Gil, R. Sánchez-Ramírez, J. C. Tello (IAA-CSIC Granada, Spain), P.
Kubánek FZU-CAS, Czech Rep.), S. B. Pandey (ARIES, India), Y. Fan, X.
Zhao, J. Bai, Ch. Wang, Y. Xin (Yunnan National Astronomical Observatory,
China) and Ch. Cui (Beijing National Astronomical Observatory, China), on
behalf of a larger collaboration, report:

"Following the detection of GRB 140102A by Swift (Hagen et al., GCNC
15653) and Fermi (Sonbas et al. GCNC 15659), the robotic 0.6m MET
telescope at the BOOTES-4 station, in Lijiang Astronomical Observatory
(China) responded to the event with the first images being obtained 30s
post-burst. At the position of the optical afterglow detected by
Swift/UVOT we detect a source
rapidly decaying in brightness, with R = 14.0 about 70s after the burst
trigger time. Detailed analysis of the whole BOOTES-4 dataset is ongoing."

[GCN OPS NOTE(07jan14): Per author's request, the "130102A" in the first line
was corrected to "140102A".]