[vsnet-grb-info 11120] Skynet observations of GRB 111107A

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  12535
SUBJECT: Skynet observations of GRB 111107A
DATE:    11/11/07 03:33:45 GMT
FROM:    Aaron LaCluyze at U.North Carolina  <lacluyze at email.unc.edu>

A. LaCluyze, J. Haislip, K. Ivarsen, D. Reichart, M. Nysewander, J. Moore,
A. Trotter, R. Egger, A. Foster, A. Oza, T. Cromartie, E. Speckhard, and J.
A. Crain report:

Skynet observed the field of GRB 111107A, Swift trigger 507185, with the
PROMPT telescopes located at CTIO in Chile.  We detect a fading optical
source within the error circle.  Preliminary calibration to USNO catalog
stars yields the follow initial detections:


Tmean(min) Tmean(day) Tel      Exp     Filt Mag     S/N
14.75 m    0.01024    Prompt4  5 x 80 s  R  19.467  2.892
15.22 m    0.01057    Prompt5  4 x 80 s  I  18.444  4.363

Further observations are ongoing. This message may be cited.