[AAVSO-HEN] GRB 070411: Magellan/Clay photometry

[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:  6278
SUBJECT: GRB 070411: Magellan/Clay photometry 
DATE:    07/04/12 04:05:59 GMT
FROM:    Edo Berger at Carnegie Obs  <eberger at ociw.edu>

E. Berger (Carnegie), M. Modjaz, A. Garg, R. Kirshner, P. Challis 
(Harvard), and A. Rest (NOAO) report:

"We obtained a 60 sec image in r-band with the LDSS3 instrument on the 
Magellan/Clay telescope on 2007 Apr 12.03 UT (4.57 hr after the burst). We 
detect the afterglow with r=20.8 mag relative to the USNO-B star located 
at RA=07:09:17.9453, DEC=+01:04:09.210 with R=17.6 mag."