[AAVSO-HEN] GRB 070612B: FRAM limit

[grb at aavso.org]

The following is a GCN Circular circulated via the AAVSO network.
For an archive and more information on circulars visit:
http://lheawww.gsfc.nasa.gov/docs/gamcosray/legr/bacodine/gcn3_archive.html

TITLE:   GCN CIRCULAR
NUMBER:  6518
SUBJECT: GRB 070612B: FRAM limit
DATE:    07/06/12 13:16:52 GMT
FROM:    Martin Jelinek at Inst.Astrophys.Andalucia,Granada  <mates at iaa.es>

Martin Jelínek, Petr Kubánek (IAA CSIC Granada, Spain), 
and Michael Prouza (Columbia U. New York, USA and FZU Praha, Czech Rep.) 
on behalf of the FRAM team, coordinated by FZU Praha, Czech Rep.

report

"The wide field camera of the telescope FRAM,  located 
at  Pierre Auger observatory  in Malargue,  Argentina,
followed  the  Swift  GRB 070612B  (Grupe  et al. GCNs
6511 and 6514).

20s R-band (lambda_eff = 640nm,  limmag = 14.8) images
were  obtained starting  62s after the  GRB (45s after
receiving the notification).

We do not detect any new source in single nor combined
images within the BAT or XRT errorboxes."

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