Dear ASCA users, We have accepted the TOO request of the follow-up observation of GRB0123 and allocated a 40-ksec exposure for the period of January 25 (today) 16:40 to January 26 19:20. For this TOO observation, the latter half of the cluster of galaxies MS 0302+1717 (PI: M. Donahue) was cancelled and which will be supplemented in theschedule after February 20. F. Nagase ----------------------------------------------------------------------------- A S C A WEEKLY OBSERVATION PLAN ----------------------------------------------------------------------------- #02: January 16 - 28, 1999 ver-2 (98/ 1/ 25) (ISAS contact scientist: K. MITSUDA (mitsuda@astro.isas.ac.jp) ----------------------------------------------------------------------------- Date MNV Target Tag. Exp. Observation PI or start name Cat. (ks) Cat. Pri./TC ( PPI/Co-PI) ----------------------------------------------------------------------------- 1/16 22:50 NGC 788 AGN 50 MUJ 1/n E. Moran /S. Ueno 1/18 9:30 1SAX J1353.9+1820 AGN 60 ESJ 1/n A. Comastri 1/19 20:50 NGC 5548 #3 S AGN 7 US 1/n C. Reynolds (AO6 Suppl.) 1/20 1:40 MS 0418.3-3844 CG 65 US 1/n J. Henry 1/21 23:50 0202+0849 AGN 40 ESJ 2/n B. McBreen 1/23 2:50 NGC 1358 AGN 40 MUJ 1/n E. Moran /TBD 1/24 6:00 MS 0302+1717 CG 50 US 1/n M. Donahue 1/25 16:40 GRB990123 SNR 40 TOO 1/n T. Murakami 1/26 19:20 3C 59 AGN 50 ESJ 1/n J. Siebert ( 1/ 28 3:10 MNV 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: Observatory Time (Calibration, maintenance), and TOO: Target of Opportunity