TITLE: GCN CIRCULAR NUMBER: 8268 SUBJECT: GRB 080915A: GROND upper limits DATE: 08/09/18 15:09:18 GMT FROM: Thomas Kruehler at MPE/MPI A. Rossi (Tautenburg Obs.), T. Kruehler, J. Greiner, A. Yoldas, C. Clemens, R. Filgas (all MPE Garching), A. Kupcu Yoldas (ESO) and G. Szokoly (Eoetvoes Univ., Budapest), report on behalf of the GROND team: GROND (Greiner et al. 2008, PASP 120, 405), mounted at the 2.2m ESO/MPI telescope at La Silla Observatory (Chile), started observations of the field of GRB 080915A (Oates et al. GCN #8227) in g'r'i'z'JHK at 00:07:25 UT on 2008-09-15, 4.6 minutes after the burst and continued for 130 minutes. The observations were resumed in the following night, starting at 05:18:45 UT and continued for 70 minutes. We detect 2 sources, one inside the XRT error circle (Evans et al.GCN #8231) at coordinates RA, DEC (J2000) = 01:11:47.83, -76:01:13.7, the other at the edge of the XRT error circle at coordinates RA, DEC (J2000) = 01:11:45.4, -76:01:10.5. A comparison of the two observing runs does not reveal any evidence for variability. We conclude that most likely none of them is associated with GRB 080915A. The co-added images from the first run then yield the following upper limits measured at a mid-time of 0.038 days after the trigger and calibrated on the SDSS standard star SA95-190: g' > 23.8 r' > 23.7 i' > 23.5 z' > 23.1 J > 20.5 H > 19.3 K > 18.3