[vsnet-grb-info 9178] GRB 100418A: ROVOR optical measurements at 35 hours
GCN Circulars
gcncirc at capella.gsfc.nasa.gov
Sat Apr 24 08:12:40 JST 2010
TITLE: GCN CIRCULAR
NUMBER: 10664
SUBJECT: GRB 100418A: ROVOR optical measurements at 35 hours
DATE: 10/04/23 23:12:34 GMT
FROM: J. Ward Moody at BYU <rovor.byu at gmail.com>
J. W. Moody, D. Laney, R. Pearson, and C. Pace report for the BYU ROVOR team:
Beginning 35 hours after the initial detection of GRB 100418A we
obtained BVR optical data using the BYU WMO 0.9m telescope.
Preliminary magnitudes were found by referencing against USNO-B1.0
star 1014-0271368 (RA(J2000) = 17:05:26.42, Dec(J2000) = +11:27:32.9).
Assuming B=18.66, V=18.00 and R=17.32 we obtain the following values:
post burst
t_mid(hr) exp.(min) filter mag. error
37.18 25
35.91
35.25
Poor weather prevented observations on 2010-04-21 and 2010-04-22
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