TITLE: GCN CIRCULAR NUMBER: 9903 SUBJECT: GRB 090814A: Skynet/DSO & GORT Observations DATE: 09/09/09 00:41:59 GMT FROM: Josh Haislip at U.North Carolina J. Haislip, D. Reichart, K. Ivarsen, A. Smith, D. Caton, L. Hawkins, L. Cominsky, K. McLin, T. Graves, G. Spear, 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 GRB 090814A (Ukwatta et al., GCN 9793) with the 14" Dark Sky Observatory telescope in North Carolina beginning 71.1 minutes after the trigger in RI through variable cloud cover. Skynet continued observing with the 14" GORT telescope at Hume Observatory in California beginning 3.3 hours after the the trigger in RI. We do not detect the afterglow (Updike et al., GCN 9794). Stacking only images that increase the limiting magnitude yields: mean time 3-sigma secondary since limiting calibration trigger telescope exposures filter magnitude stars * 75.4 m DSO-14 2 x 160 s I 18.5 13 SDSS 6 + 1 x 80 s 86.4 m DSO-14 4 x 160 s R 19.2 9 SDSS 6 96.6 m DSO-14 3 x 160 s I 17.8 13 SDSS 6 105.3 m DSO-14 1 x 160 s R 16.9 9 SDSS 6 4.7 h GORT 35 x 80 s I 20.1 8 SDSS 6 5.2 h GORT 40 x 80 s R 20.8 7 SDSS 6 24.9 h DSO-14 11 x 160 s R 20.0 9 SDSS 6 * Transformed using Jester et al., 2005, ApJ, 130, 873.