TITLE: GCN CIRCULAR NUMBER: 15858 SUBJECT: GRB 140215A: Continued Skynet PROMPT Observations of the Optical Afterglow DATE: 14/02/18 15:48:45 GMT FROM: Adam S. Trotter at UNC-Chapel Hill/PROMPT/Skynet A. LaCluyze, J. Haislip, D. Reichart, A. Trotter, S. Poshyachinda, W. Rujopakarn, A. Foster, N. Frank, K. Ivarsen, J. Moore, M. Nysewander, R. Beauchemin, T. Berger, M. Carroll, H. T. Cromartie, R. Egger, M. Hinckle, A. Ireland, M. Maples, L. Scott, and J. A. Crain report: Skynet continued observing the Swift-BAT localization of GRB 140215A (Markwardt et al., GCN 15837, Swift trigger 586680) with six of the PROMPT telescopes located at CTIO in Chile. LaCluyze et al. (GCN 15840) described rapid-response observations of a fading optical afterglow taken between ~1m and 6.5m after the burst in BVRI and luminance, and presented a preliminary light curve calibrated to USNOB and NOMAD catalog stars. A revised and recalibrated light curve, including observations taken at t~20-24h, is at: http://www.skynet.unc.edu/grb/grb140215a_2.png In stacks of ~45x160s images from the second night, we do not detect the afterglow with any degree of confidence (the I-band "detections" in the light curve plot are most likely spurious.) The 3-sigma limiting magnitudes are: Band tmid Limit I 21.9h >20.2 R 21.0h >20.5 V 21.8h >20.5 B 21.7h >20.3 Magnitudes are in the Vega system, and were calibrated to 4 APASS DR7 catalog stars in the field. They have not been corrected for line-of-sight MW dust extinction corresponding to E(B-V)=0.09 (Schlegel et al. 1998). No further Skynet observations are scheduled.