[vsnet-grb-info 4161] GRB 061222B: BOOTES-IR optical observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  5968
SUBJECT: GRB 061222B: BOOTES-IR optical observations
DATE:    06/12/22 09:16:20 GMT
FROM:    Alberto Castro-Tirado at Inst.de Astro. de Andalucia  <ajct at iaa.es>

A. de Ugarte Postigo, M. Jelínek, A. J. Castro-Tirado, V. Casanova, J. 
Gorosabel,
R. Cunniffe, S. Vitek (IAA-CSIC Granada), P. Kubánek (Univ. de Valencia),
R. Hudec (ASU-CAS Ondrejov) and L. Sabau-Graziati (INTA Madrid),

report:

"Following the detection of GRB 061222B by SWIFT (GCN 5957), the field was
imaged with the 60-cm BOOTES-IR robotic telescope located at Observatorio
de Sierra Nevada (Granada, Spain). Observations were taken in the R-band 
starting
at 04:12:44 U.T. (i.e. 102 s after the onset of the event).  On a co-add 
of several images
(30s total time) taken at 04:18:46 (464 s after the GRB trigger), the 
optical afterglow
(GCNC 5956) is detected with R = 17.7 +/- 0.5.  The high airmass (~4.3) 
prevented
taking high quality data. Further analysis is ongoing."

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