Dear ASCA users: I am sending an ASCA observation schedule for the period of May 8 - 18. The 29-ksec exposure of Cyg X-1 is a supplemental observation for the XRT PSF (point spread function) calibration. A plan of ASCA calibration observations hereafter during the AO3 period is attached below the weekly shcedule. We also include an AO2 hold-over target, X2127+119. I also attached a list of supplemental observation targets. This listing is based on the observation journal recently released. I have searched targets real exposure time significantly smaller than the approved time upto the end of February 1995with and listed those targets which need more than 5 ksec additional exposure (No supplement is planned for time critical (coordinated simultaneous) observations even if the achieved exposure is significantly smaller than the approved exposure time). F. Nagase ----------------------------------------------------------------------------- A S C A WEEKLY OBSERVATION PLAN ----------------------------------------------------------------------------- May 8 - 19, 1995; (ISAS contact scientist: M. ITOH itoh@astro.isas.ac.jp) ----------------------------------------------------------------------------- Date MNV Target Tag. Exp. Observation PI or start name Cat. (ks) Cat. Pri./TC (PPI/Co-PI) ----------------------------------------------------------------------------- 5/ 8 13:30 RX10131+505 p.3 AGN 40 JPN 1/n A. Yamashita 5/ 9 13:20 Cyg X-1 (suppl) Bin. 20 MOT CAL ASCA Team 5/10 2:40 NGC 4151 AGN 100 JPN 2/n T. Mihara 5/12 12:10 V444 Cyg p.1 Star 15 JPN 1/Y Y. Maeda 5/12 21:30 NGC7172 AGN 20 ESJ 1/n R. Svensson 5/12 15:20 V444 Cyg p.2 Star 10 JPN 1/Y Y. Maeda 5/13 21:30 Cyg Loop East SNR 20 ESJ 1/n A. Decourchelle 5/14 13:40 V444 Cyg p.3 Star 15 JPN 1/Y Y. Maeda 5/14 23:00 NGC 3227 AGN 40 US 2/n P. Serlemitsos 5/15 23:10 X2127+119 Bin. 40 MUJ 2/n Smale/Dotani 5/17 3:50 TY Pyx(HD77137) Star 40 US 1/Y D. Huenemoerder 5/18 2:20 TXFS 1011+144 AGN 40 US 1/n W. Van Breugel (5/19 1:50 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 PLAN DURING AO3 PERIOD ---------------------------------- (Item) (target) (exposure) ------------------------------------------------------------------------------ (1) GIS PSF at extended tail (supplement) Cyg X-1 20 ks (2) XRT/GIS performance Crab nebula 40 ks (3) XRT contamination (soft X-ray reflectivity) N132D or E0102 TBD (4) SIS CTI for 4-CCD mode Cas A 100 ks (5) SIS CTI for 2-CCD mode Cas A 60 ks (6) SIS CTI for 1-CCD mode Cas A 40 ks (7) XRT/GIS extended PSF for soft X-rays TBD TBD (8) XRT/SIS PSF (at r<11') TBD TBD ------------------------------------------------------------------------------ ---------------------------------------- LIST OF SUPPLEMENTAL OBSERVATION TARGETS ---------------------------------------- ------------------------------------------------------------------------------ Seq No. Obs. Target name Exposure PI or Pri Appr. Suppl. Date GIS SIS (PPI Time Expo. yy mm dd (ksec) /Co-PI) (ks) (ks) ------------------------------------------------------------------------------ 41017010 94 04 26 LMC_X-4 20.0 12.2 Nagase 2 20 10 /Clark 82045000 94 08 20 ABELL_2204 20.2 17.6 White 2 40 20 72025000 94 09 03 ESO103-G35 21.3 18.8 K.Leighly 1 40 19 52003010 94 11 15 CYGNUS_LOOP #7 4.3 4.3 E.Miyata 2 10 6 94 11 16 CYGNUS_LOOP #9 0.0 0.0 E.Miyata 2 10 10 72020000 94 11 19 RE1034+39 33.0 31.6 K.Pounds 1 40 7 73078000 95 01 14 B1422+231 27.7 25.2 Bechtold 1 40 12 /Iwasawa 43002000 95 01 31 GS1124-68 30.7 23.5 Y.Tanaka 1 40 9 ------------------------------------------------------------------------------