BL Lac major optical outburst Upon recent notification of the activity of BL Lac, our CCD observations on Nov. 30 (Makoto Uemura and Taichi Kato) recorded extremely brightness of Rc=12.21, with appreciable intranight variation peaking around 30.56UT. The brightness closely rivals the outburst in 1968, when the historical maximum of V=12.0 was reached. Visual and CCD photometry observations reported to VSNET so far indicate the remarkable source activity began since November 25, after a gradual increase of the activity in the preceding months. Regards, Taichi Kato and Makoto Uemura ------------------------------------------------- Summary of recent observations reported to VSNET: YYMMDD(UT) mag observer 991101.769 139 (T. Kinnunen) 991102.817 136 (C. P. Jones) 991102.923 139 (G. Poyner) 991103.160 139 (G. Hanson) 991103.690 141 (T. Kinnunen) 991103.780 143 (M. Verdenet) 991103.931 137 (C. P. Jones) 991103.953 139 (G. Poyner) 991104.181 142 (G. Hanson) 991105.188 145 (G. Hanson) 991105.514 139 (H. Itoh) 991106.149 145 (G. Hanson) 991106.769 140 (M. Verdenet) 991106.806 140 (C. P. Jones) 991107.769 140 (M. Verdenet) 991109.194 146 (G. Hanson) 991109.423 146: (S. Takahashi) 991109.834 136 (C. P. Jones) 991109.885 137 (G. Poyner) 991110.090 142 (G. Hanson) 991110.680 145 (T. Kinnunen) 991111.099 143 (G. Hanson) 991112.133 144 (G. Hanson) 991112.819 145: (E. Muyllaert) 991113.146 146 (G. Hanson) 991113.480 147 (H. Itoh) 991115.183 141 (G. Hanson) 991115.760 134 (M. Verdenet) 991115.799 141 (E. Muyllaert) 991116.864 137 (C. P. Jones) 991116.941 139 (G. Poyner) 991117.092 142 (G. Hanson) 991117.863 138 (C. P. Jones) 991119.103 139 (G. Hanson) 991119.876 140 (C. P. Jones) 991119.947 140 (G. Poyner) 991125.805 142 (J. Ripero) 991126.750 133 (M. Verdenet) 991126.760 140 (T. Kinnunen) 991127.819 143 (J. Ripero) 991127.860 133 (M. Verdenet) 991128.819 127 (M. Verdenet) 991129.830 129 (G. Poyner) 991130.512 12.25C (Ouda team) 991130.528 12.26C (Ouda team) 991130.560 12.21C (Ouda team) 991130.589 12.22C (Ouda team) 991130.637 12.25C (Ouda team) 991130.642 127 (T. Kinnunen) 991130.676 129 (T. Kinnunen) 991130.762 128 (J. Ripero)