080725 Finder Charts

The finder chart will help you find the star field. The error chart is what you want to compare your images with to look for a GRB afterglow.

30x30 arc minute DSS finder chart (1st generation)
080725-dss-finder.jpg
080725-dss-finder-negate.jpg
080725-dss-finder-masked.jpg (Error circle drawn)

6minx6min arc minute DSS chart covering the error pattern only (up to 30 arc minutes)
080725-dss-error.jpg
080725-dss-error-negate.jpg

GSC2.2 Photometry
Minor Planet List

Dust extinction in this area is

Av = 0.247 (mag) according to the
IPAC Dust Extinction Map Tool
Click for a GRB Real-time Sky Map at Sonoma State