V1504 Cyg outburst Relatively bright outburst. Possible superoutburst -- selected as a candidate observing target. YYYYMMDD(UT) mag observer 20000820.869 <150 (M. Reszelski) 20000821.030 <153 (G. Poyner) 20000821.201 <143 (M. Simonsen) 20000821.278 173V (S. O'Connor) 20000821.885 <145 (E. Muyllaert) 20000821.899 <152 (T. Kinnunen) 20000822.874 <145 (E. Muyllaert) 20000822.915 <150 (M. Reszelski) 20000822.992 <153 (G. Poyner) 20000823.869 <145 (E. Muyllaert) 20000823.894 <154 (P. A. Dubovsky) 20000823.899 <152 (T. Kinnunen) 20000823.935 <151 (M. Reszelski) 20000824.926 <145 (E. Muyllaert) 20000825.026 <155 (G. Poyner) 20000825.173 <146 (M. Simonsen) 20000825.840 <152 (T. Kinnunen) 20000825.867 <145 (E. Muyllaert) 20000825.915 <152 (M. Reszelski) 20000826.169 166C (L. Cook) 20000826.199 142C (L. Cook)