[vsnet-grb-info 11865] GRB 120422A: Super-LOTIS early observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  13255
SUBJECT: GRB 120422A: Super-LOTIS early observations
DATE:    12/04/23 06:49:46 GMT
FROM:    Peter A. Milne at Super-LOTIS  <pmilne511 at cox.net>

Adria C. Updike (Dickinson College), Dieter H. Hartmann (Clemson
University), Peter A. Milne (Steward Observatory), and G. Grant Williams
(MMTO) report:

We observed the field of GRB 120422A (Troja et al., GCN 13243) with the
0.6m Super-LOTIS telescope at KPNO beginning 77 seconds after the
trigger under good conditions.  We do not detect the OT (Cucchiara et
al., GCN 13245; Kuin & Troja, GCN 13248) in the R band.  Limiting
magnitudes are given below, compared to the USNO B1.0 catalog.

midtime (s)       stack         limiting mag
----------------------------------------------------
126                  4 x 5s           16.4
233                  5 x 10s         16.9
557                  5 x 60s         19.0