GCN Circular 14750
Subject
GRB 130603A: SON optical observations
Event
Date
2013-06-04T06:39:09Z (13 years ago)
From
Arto Oksanen at Nyrola Obs., Finland <oksanen@nyrola.jklsirius.fi>
P. Kehusmaa, A. Oksanen and C. Harlingten report on behalf of
the Searchlight Observatory Network:
On 2013 June 03, starting at 06:42 UT (T0+42.5 minutes), we observed
the field of GRB130603A (Melandri et al., GCN Circ. 14731) with
the 0.40 m NM1 telescope located in New Mexico, USA with Apogee Alta
U42 CCD for 3x120 seconds using the V filter and 7x120 seconds unfiltered.
The afterglow reported by Melandri et. al. (GCNC 14732) is detected in
all unfiltered images and in the coadded V band image.
We report following differental photometry:
UTC (mid) T0+(h) Mag Err Filter
----------------------------------------------------------
2013-06-03T06:44:21 0.75 18.78 0.13 V
2013-06-03T06:59:55 1.00 18.79 0.07 clear
----------------------------------------------------------
The reference magnitude from the nearby USNO B1.0 star (1729-0016610)
with R=16.49.
A snapshot showing our coadded unfiltered image can be found at the URL
http://pilvi.dyndns.org/arto/GRB130603A_C_840s.jpg