TITLE: GCN CIRCULAR NUMBER: 10001 SUBJECT: Short-Duration GRB 090621: Skynet/Dolomiti Observations DATE: 09/10/08 15:11:31 GMT FROM: Josh Haislip at U.North Carolina J. Haislip, D. Reichart, M. Maturi, K. Ivarsen, A. LaCluyze, A. Foster, J. Moore, A. Oza, M. Schubel, J. Styblova, A. Trotter, J. A. Crain, and M. Nysewander report: Skynet observed the Swift/BAT localization of short-duration GRB 090621 (Curran et al., GCN 9545) with the 16" telescope at the Dolomiti Astronomical Observatory in Italy beginning 26.2 minutes after the trigger in Red, which we have calibrated to R. We do not detect the afterglow (Curran et al., GCN 9545). Stacking only images that increase the limiting magnitude yields: mean 1-sig. 1-sig. time 3-sig. sys. stat. since lim. cal. cal. cal. trig. tel. exp. fil. mag. stars unc. unc. (m) (# x s) (mag) (mag) 35.3 DAO-16 4 x 160 R 19.9 1518 USNO B1 0.277 0.000 + 3 x 80