[vsnet-grb-info 14036] GRB131018, optical observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  15350
SUBJECT: GRB131018, optical observations
DATE:    13/10/18 13:22:50 GMT
FROM:    Arne A. Henden at AAVSO  <arne at aavso.org>

Arne Henden (AAVSO), as part of a larger collaboration, reports:

We observed the field of GRB131018 using the Mt. John University Observatory 
Optical Craftsman 61cm telescope (part of AAVSOnet), with observations starting 
at 12:55:24 UT (7.6 minutes after the Swift trigger) under poor seeing 
conditions and bright moonlight.  We do not see any optical afterglow at the XRT 
position to a limiting magnitude of R=17 (using APASS calibrations).