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GCN Circular 6051

Subject
GRB 070125: further AAVSO optical observations
Date
2007-01-29T14:54:17Z (17 years ago)
From
AAVSO GRB Network at AAVSO <aavso@aavso.org>
D.T. Durig (Cordell-Lorenz Observatory, University of the South)
reports on behalf of the AAVSO International High Energy Network
on further optical observations of GRB070125 (GCN #6024, Hurley
et al.):

D.T. Durig reports the following unfiltered (CR) magnitude:

2007 Jan 29, 07:39:56 UT: 21.5 (CR)

Note that this is a marginal detection, with an estimated SNR
of 3.1.

Details of these observations are available from the AAVSO at
ftp://ftp.aavso.org/grb , and full details of the observation
are available at the following URL:

http://www.aavso.org/pipermail/aavso-hen/2007-January/006947.html

-----------------------------

Observer: D. T. Durig (CLW01)

Report: I had to stack 148 images, but I finally got the SNR to 3.1. I
could clearly see it in stacks of 60, 90 and 120 but the SNR was only
between 2.5 and 2.8. I lost two images to wind, so only added the best
148 frames.  Position 07 51 17.70 +31 09 04.3 GIF image posted to
http://arthur.sewanee.edu/obsv/view.php
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