TITLE: GCN CIRCULAR NUMBER: 17527 SUBJECT: GRB 150302A: NOT afterglow candidate DATE: 15/03/02 06:25:52 GMT FROM: Antonio de Ugarte Postigo at IAA-CSIC J.P.U. Fynbo (DARK/NBI), A. de Ugarte Postigo (IAA-CSIC, DARK/NBI), T. Kruehler (ESO), and M. Saajasto (NOT) report on behalf of a larger collaboration: We observed the field of GRB 150302A (Lien et al., GCN 17526) using the 2.5m Nordic Optical Telescope with AlFOSC. Observations starting at 05:59 UT (17 min after the GRB) reveal an optical counterpart within the XRT error box at coordinates 11:42:07.43 +36:48:38.9 (J2000.0), with a magnitude of r=22.3, calibrated against SDSS field stars. [GCN OPS NOTE(02mar15), Per author's request, MS was added to the author list.]