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ASCA Weekly

Dear ASCA users:

I am sending an ASCA observation schedule for the period of September 22
to October 4. Although the schedule between September 22 and 24 were 
announced in the previous weekly schedule, it was revised to adjust 
observation period of EC1931-5915 (PI: Schlegel) so as to get better 
eclipse data.  In corporation to this, the observations of Sgr B region was 
divided into two segments.

In this week we have installed a 100-ksec Crab Nebula observation for the
instrument calibration. Main purpose is to get best-statistics spectra of Crab
up to 10 keV for both GIS and SIS so as to do fine tuning of response matrix.

Miss-operation was happened at KSC on September 5, during up-loading 
the OP command plan. This caused loss of about 30 ksec exposure for X1636-536 
(PI:  Y. Tanaka) among the 40-ksec allocated time.

September 22 - October 4,  1994:  
(ISAS contact scientist:   M. Markevitch,   maxim@astro.isas.ac.jp)
Date	MNV	Target 		Tag. 	Exp.	Observation	PI or 	 
	start	name		Cat.	(ks)	Cat.  Pri./TC	 ( PPI/Co-PI)
9/22	 4:10	Sgr B (part-1)	SNR	60	JPN	2/n	Y. Maeda

9/23	12:10	EC 1931-5915	CV	20	US	2/n	E. Schlegel

9/24	 2:20	Sgr B (part-2)	SNR	20	JPN	2/n	Y. Maeda

9/24	14:40	MS0440+-2-4	CG	40	MJU	2/n   Y.Tawara/I.Gioia

9/25	20:00	MS0451.5+0250	CG	20	USJ	2/n	E. Ellingson

9/26	12:00	Zeta Ori	Star	20	MJU	2/n  K.Torii/M.Corcoran

9/27	00:40	Crab Nebula	SNR	100	MOT	CAL	ASCA team

9/29	18:10	Akn 120		AGN	40	JUS	1/n	H. Kunieda

9/30	22:50	PSR 0540-69	Star	10	JPN	2/n	F. Nagase

10/ 1	 8:20	SN1987A		SNR	100	JPN	1/n	M. Itoh

10/ 3	21:10	PSR 0540-69	Star	10	JPN	2/n	F. Nagase

(10/ 4	 5:00	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