[AAVSO-HEN] GRB080604: confirmation of optical afterglow

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TITLE:   GCN CIRCULAR
NUMBER:  7801
SUBJECT: GRB080604: confirmation of optical afterglow
DATE:    08/06/04 08:04:00 GMT
FROM:    Evert Rol at U.Leicester  <er45 at star.le.ac.uk>

E. Rol (U. Leicester), C. Guidorzi (INAF-OAB), A. Gomboc (U. Ljubljana), 
I.A. Steele (Liverpool JMU), P. O'Brien (U. Leicester), A, Melandri, D. 
Bersier, C.G. Mundell, R.J. Smith, D. Carter, S. Kobayashi, M. Burgdorf, 
M. Bode (Liverpool JMU), N. Bannister, N. Tanvir (U. Leicester) report:

The Faulkes Telescope North observed the position of GRB080604. We confirm 
the detection of an optical transient (La Parola, GCN 7800), with a 
position of (J2000):

RA =   15 47 51.65
Dec = +20 33 28.1

In the first 10 second exposure, starting 5:42 minutes after the BAT 
trigger, we estimate a magnitude of R = 20.12 +/- 0.15 with respect to the 
USNO-B1.0 star at 15:47:52.50, +20:34:24.4.