ASCA weekly

[Fumiaki NAGASE <nagase@astro.isas.ac.jp>]

Dear ASCA users,

Today (May 8), we successfully finished most critical operation of ASCA ACS
reconfiguration, i.e., transfer to safe hold mode, replacement of Skew-2 gyro 
to Z-gyro, stabilizing satellite, finding current attitude (R.A.=177, Dec=69) 
andreturn to normal pointing mode with STT control. After Z-gyro function test
on May 9, we will perform a test maneuver using an observation target.
RXJ 0658-5557 is selected as a target position for the test maneuver, since the
angular distance from current position is moderate to perform maneuver test
and sun angle of the target is best (just 90 degree from the sun). If every 
procedures progress as expected, we should get data for RXJ 0658-5557 and we 
return to a regular observation mode on May 11. Yet taking some emergent cases
into account, we will perform maneuvers on May 10 and 11 during the contact 
passes of ASCA at KSC. Afer finishing all the procedures of gyro replacement
we will follow observations with the revised short-term schedule as follow.

F. Nagase


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A S C A     WEEKLY  OBSERVATION   PLAN
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May  10 - 21	 ver-2 (revised 96/05/08)
(ISAS contact scientist:  M. ISHIDA ishida@astro.isas.ac.jp)
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Date	MNV	Target 		Tag. 	Exp.	Observation	PI or 
	start	name  		Cat.	(ks)	Cat.  Pri./TC	 ( PPI/Co-PI)
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5/10	 1:00	RXJ 0658-5557	CG	40	MJU	2/n	Y.Tanaka
								/W.Tucker
5/11	 2:40	Vela SNR East	SNR	30	JPN	2/n	H. Tsunemi

5/12	 0:40	NGC 2865	Gal.	50	JPN	1/n	N. Arimoto
	
5/13	12:10	M82 #7		AGN	10	JPN	2/n	T. Tsuru

5/13	18:30	NGC 3081	AGN	40	MJU	1/n	H. Awaki
								/R. Griffiths
5/15	 3:40	WZ SGE		CV	40	MUJ	2/n	J. Patterson
								/P. Saraswat
5/16	 4:00	PKS 2155-304 #1	AGN	10	USJ	1/Y	J.G. Stacy

5/16	10:20	2EG J2020+4026	AGN	40	JPN	1/n	T. Takahashi

5/17	10:20	NGC 7172	AGN	40	ESJ	3/n	G. Matt

5/18	 6:40	NGC 7314	AGN	50	US	1/n	T. Yaqoob

5/19	 8:30	NGC 4104 Group	CG	40	JPN	2/n	S. Sato

5/20	10:10	1230.8+3440	CG	20	US	1/n	C. Jones

5/21	 1:50	(to next target)
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(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)