TITLE: GCN GRB OBSERVATION REPORT NUMBER: 4931 SUBJECT: GRB 060323 : WIDGET simultaneous optical observations DATE: 06/03/27 19:50:09 GMT FROM: Toru Tamagawa at RIKEN K. Abe, K. Onda, M. Tashiro (Saitama-U), T. Tamagawa, Y. Urata (RIKEN), H. Azuma, M. Kuwahara (RIKEN/TUS), F. Usui (ISAS/JAXA) on behalf of the WIDGET collaboration report: "We have observed the error box of the Swift GRB 060323 (Vetere et al., GCN 4904) with a very wide-field camera, WIDGET, located at Akeno, Japan. WIDGET is continuously monitored the region with repeat of unfiltered 5 seconds exposures between 750 seconds before and 82 seconds after the burst trigger. We have not found any optical emission at the Swift XRT source position (Kennea et al., GCN 4909). The 1-sigma limiting magnitude of each frame derived by the Tycho 2 catalog was around V=12.0 magnitude." This message may be cited.