[vsnet-grb-info 13170] GRB 130427A: SARA-N detection

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  14507
SUBJECT: GRB 130427A: SARA-N detection
DATE:    13/04/29 21:18:59 GMT
FROM:    Dieter Hartmann at Clemson.U  <hdieter at clemson.edu>

William C. Keel (U. of Alabama, Tuscaloosa), Dieter Hartmann and Aman Kaur
(Clemson University) report:

We observed the field of GRB 130427A (Maselli, et al., GCN 14448) with the
SARA 0.9m telescope at KPNO  (http://saraobservatory.org) from 0350-0420 UT
on April 29, obtaining a total of 30 min exposure in the B,V, and R band.

We detect the optical afterglow (Elenin et al; GCN14450) in all bands.
In comparison with Landolt (PG 0942) standard stars we find

B = 19.32
V = 19.00
R = 18.53

These magnitudes are not corrected for Galactic extinction, but include
KPNO airmass corrections at the time of observation.

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