TITLE: GCN CIRCULAR NUMBER: 7929 SUBJECT: GRB 080702A: MITSuME Akeno optical upper limits DATE: 08/07/03 00:07:25 GMT FROM: Nobuyuki Kawai at Tokyo Tech Y.A. Mori, T. Shimokawabe, Y. Kudou, H. Nakajima and N. Kawai (Tokyo Tech) report on behalf of the MITSuME collaboration: The 3-color 50cm MITSuME Telescope at Akeno, Japan, responded to GRB 080702A (de Pasquale et al. GCN 7920) at 43 sec after the trigger, though we obtained the first sky image 20 min after the trigger due to the poor sky condition with frequent cloud coverage. In the co-added images of Ic, Rc, and g' bands, we did not detect any afterglow candidate in the XRT error circle. The 3-sigma limiting magnitudes based on USNO-B1.0 (I-band) and NOMAD (R-band,g'-band) stars are following. Filter start UT end UT Exposure LimitMag --------------------------------------------------- g' 12:16:37 13:11:35 23 x 60 s 16.6 Rc 12:16:37 13:11:35 23 x 60 s 17.7 Ic 12:16:37 13:11:35 23 x 60 s 16.5 ---------------------------------------------------