TITLE: GCN CIRCULAR NUMBER: 6051 SUBJECT: GRB 070125: further AAVSO optical observations DATE: 07/01/29 14:54:17 GMT FROM: AAVSO GRB Network at AAVSO 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