Dear ASCA users, I am sending an ASCA observation schedule for February 20 to March 4. In this week, we have installed a supplemental observation (Cham cloud #3) for an AO-4 uncompleted observation and a re-observation for an AO4 scheduled but unobserved target (Abell 2255). Currently MUSES-B (ISAS space VLBI) mission is scheduled to be launched on February 11. Disturbance to the ASCA observations might be arise due to the flight operation. The observation of 1ES 2344+514 (#2) scheduled on January 22 (PI; T. Takahashi) was cancelled due to confliction with the MUSES-B operation test at KSC. This observation is carried over to the summer window. F. Nagase ----------------------------------------------------------------------------- A S C A WEEKLY OBSERVATION PLAN ----------------------------------------------------------------------------- February 20 -March 4, 1997 ver-1 (97/01/30) (ISAS contact scientist: Y. ISHISAKI ishisaki@phys.metro-u.ac.jp) ----------------------------------------------------------------------------- Date MNV Target Tag. Exp. Observation PI or start name Cat. (ks) Cat. Pri./TC ( PPI/Co-PI) ----------------------------------------------------------------------------- 2/20 20:40 Cham cloud #3 Star 5.3 JPN 2/n S. Yamauchi (AO4 Supplement) 2/21 1:10 Abell 2255 CG 100 MJU 2/n Y. Ikebe (AO4 re-schedule) /D. Davis 2/23 6:10 MS 1621.5+2640 CG 40 MUJ 1/n J. Henry /E. Miyata 2/24 10:50 B2 1615+35 AGN 60 JPN 1/n Y. Fukazawa 2/25 23:30 GRO J1655-40 Bin. 100 MJU 1/n Y. Ueda/ /Robinson 2/28 16:50 NGC 6355 Bin. 30 JPN 1/n H. Negoro 3/ 1 13:40 X0921-630.1 Bin. 20 JPN 2/Y K. Asai 3/ 2 6:40 Rho Oph core Star 100 JPN 1/n K. Koyama (3/ 4 21:20 to next target) ----------------------------------------------------------------------------- (Note) Obs. Cat. JPN: Japan time, US: US time, JUS: Japan-US Collaboration, USJ: US-Japan Collaboration, MJU: Merged Japan-US (PPI=Japan), MUJ: Merged US-Japan (PPI=US), ESJ: ESA-Japan Program, MOT: Manager's observatory time (Calibration and maintenance)