Best of EXOSAT Express part1

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Performance Characteristics (LE)

Low Energy Experiments	Characteristics/Telescope
Energy Range	0.04-2 keV (6-300Å) CMA's^*
Energy Resolution	Five filters are available for broad-band spectroscopy
Field of view	2.2° diameter
Effective Area	Thin Lexan Filter	Al/P Filter	Boron Filter
.05 keV	0.2	0.3	-
.1 keV	4.0	1.5	-
.5 keV	0.8	1.0	-
1 keV	2.0	2.0	1.2
1.5 keV	2.0	2.0	1.8
2.0 keV	0.5	0.5	0.5
Spatial Resolution (Line Spread function HEW)
On axis	~18 arc seconds
20 arc minutes off-axis	~40 arc seconds
Average steady residual background^**	1.8 cnts/sec/cm²(LE1) 2.8 cnts/sec/cm²(LE2)
Grating	A 500 lines/mm grating is available for high resolution spectroscopy on LE2 = 1 Å ( 40 Å) and 5 Å for = 300 Å

^* Subject to UV contamination between 900 - 2600 Å ^** Background rate subject to flaring

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Last modified: Thursday, 26-Jun-2003 13:48:32 EDT