TITLE: GCN CIRCULAR NUMBER: 14510 SUBJECT: GRB 130427A: Continued Skynet/PROMPT Observations DATE: 13/04/30 01:26:11 GMT FROM: Adam S. Trotter at UNC-Chapel Hill/PROMPT/Skynet A. Trotter, D. Reichart, J. Haislip, A. LaCluyze, T. Berger, H. T. Cromartie, R. Egger, A. Foster, N. Frank, K. Ivarsen, M. Maples, J. Moore, M. Nysewander, E. Speckhard, and J. A. Crain report: Skynet continued observing the Swift/XRT localization of GRB 130427A (Maselli et al., GCN 14448, Swift trigger #554620) with four 16" telescopes of the PROMPT array at CTIO, Chile, starting at 2013-04-28, 23:06 UT, and continuing until 04-29, 3:51 UT (t=39.28h-44.03h post-trigger). It took ~110 160-s exposures, simultaneously in each of the BVRI bands. We performed photometry on each exposure, calibrated to two SDSS stars in the field. B-band photometry was performed on stacks of 3-4 images in order to provide at least 3sigma detections. A preliminary light curve of the second's data is at: http://skynet.unc.edu/grb/grb130427a_2.png A light curve of both the first and second nights' data is at: http://skynet.unc.edu/grb/grb130427a_1_2.png See Trotter et al. (GCN 14497) for a description of the first night's observations. Further Skynet observations are ongoing.