TITLE: GCN CIRCULAR NUMBER: 16253 SUBJECT: GRB 140512A: Optical observations from the 2.5 m NOT DATE: 14/05/13 03:16:22 GMT FROM: Antonio de Ugarte Postigo at IAA-CSIC A. de Ugarte Postigo (IAA-CSIC, DARK/NBI), J. Gorosabel (IAA-CSIC, UPV-EHU), D. Xu (DARK/NBI), T. Kruehler (ESO), A.A. Djupvik (NOT), E. Gafton (OKC, Stockholm Univ.) and T. Libbrecht (Stockholm Univ.) report on behalf of a larger collaboration: We have observed the field of GRB 140512A (Pagani et al. GCN 16249) with the AlFOSC instrument on the 2.5 m Nordic Optical Telescope (La Palma, Spain), as part of the Stockholm remote observing school. Observations consisted of 3x300s imaging in R, starting at 02:10 UT (6.65 hrs after the burst). Observations were performed under variable seeing conditions of 2.0-2.5". Preliminary photometry, based on the USNO-B1.0 catalogue yields R~19.5 mag. Spectroscopic observations are ongoing.