[vsnet-grb-info 5985] GRB 080413B: Rapid PROMPT Observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  7629
SUBJECT: GRB 080413B: Rapid PROMPT Observations
DATE:    08/04/17 17:02:01 GMT
FROM:    Thomas Summers Brennan at UNC/GRB Group  <bre at email.unc.edu>

T. Brennan, D. Reichart, M. Nysewander, A. LaCluyze, K. Ivarsen, J. A. 
Crain, M. Schubel, A. Foster, J. Haislip, J. Styblova, and A. Trotter 
report:

Skynet observed the localization of GRB 080413B (Stamatikos et al., GCN 
7598) with four of the 16" PROMPT telescopes at CTIO beginning 27 
seconds after the trigger (10 seconds after notification) in UBVRz'

We detect the afterglow (Stamatikos et al., GCN 7598) in BVRz'.  At 42 
seconds after the burst we measure B ~ 15.7 mag (calibrated to 2 USNO B1 
stars), at 55 seconds we measure V ~ 15.4 mag (calibrated to 2 USNO B1 
stars), and at 87 seconds we measure R ~ 15.4 mag (calibrated to 2 NOMAD 
stars).