[AAVSO-HEN] GRB 090702: Skynet/GORT Observations

[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:  9917
SUBJECT: GRB 090702: Skynet/GORT Observations
DATE:    09/09/16 20:08:45 GMT
FROM:    Josh Haislip at U.North Carolina  <haislip at physics.unc.edu>

J. Haislip, D. Reichart, L. Cominsky, K. McLin, T. Graves, G. Spear, K. 
Ivarsen, M. Schubel, A. LaCluyze, A. Foster, J. Moore, A. Oza, J. Styblova, 
A. Trotter, J. A. Crain, and M. Nysewander report:

Skynet observed the INTEGRAL/IBAS localization of GRB 090702 (Paizis et 
al., GCN 9603) with the 14" GORT telescope at Hume Observatory in 
California beginning 18.2 hours after the the trigger in I.

We do not detect the afterglow (Sbarufatti & Mangano, GCN 9607).  Stacking 
only images that increase the limiting magnitude yields:

mean                                                 1-sig.   1-sig.
time                            3-sig.               sys.     stat.
since                           lim.     cal.        cal.     cal.
trig.   tel.   exp.      fil.   mag.     stars*      unc.     unc.
(h)            (# x s)                               (mag)    (mag)

18.2    GORT   2 x 80    I      17.7     32 SDSS 7   0.051    0.007

* Transformed using Jester et al., 2005, ApJ, 130, 873.