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<P><FONT COLOR="#000099" SIZE="-1" FACE="Arial">The </FONT><FONT
SIZE="-1" FACE="Arial"><A HREF="http://www.astro.isas.ac.jp/xray/mission/astroe/astroeE.html">ASTRO-E</A></FONT><FONT
COLOR="#000099" SIZE="-1" FACE="Arial"> mission is an international cooperative
project between NASA and the Japanese Institute of Space and Astronautical
Science (</FONT><FONT SIZE="-1" FACE="Arial"><A
HREF="http://www.isas.ac.jp/">ISAS</A></FONT><FONT COLOR="#000099"
SIZE="-1" FACE="Arial">). The spacecraft, launch vehicle, and some of the
science instrumentation are being provided by ISAS. In this joint project,
GSFC will provide the X-Ray Spectrometer (XRS) Detector System (</FONT><FONT SIZE="-1" FACE="Arial"><A
HREF="http://lheawww.gsfc.nasa.gov/docs/xray/astroe/astroe.html">XDS</A></FONT><FONT
COLOR="#000099" SIZE="-1" FACE="Arial">) and five(5) X-Ray Telescopes (</FONT><FONT SIZE="-1" FACE="Arial"><A HREF="http://lheawww.gsfc.nasa.gov/docs/xray/astroe/MirrorLab/xrt.html">XRT</A></FONT><FONT
COLOR="#000099" SIZE="-1" FACE="Arial">). Additionally, GSFC will manage
a reimbursable contract with MIT to provide the Charge Couple Device
(CCD), the Focal Plane Assembly (FPA), and its associated Analog Electronics
Assembly (AE) for the X-Ray Imaging Spectrometer (</FONT><FONT SIZE="-1" FACE="Arial"><A HREF="http://heasarc.gsfc.nasa.gov/docs/astroe/xis_inst.html">XIS</A></FONT><FONT
COLOR="#000099" SIZE="-1" FACE="Arial">) instrument.</FONT></P>
<P><FONT COLOR="#000099" SIZE="-1" FACE="Arial">ASTRO-E Mission is the
Japan's fifth X-Ray Astronomy mission scheduled to be launched on January
24, 2000. The major purposes of ASTRO-E is to observe astronomical objects
in a cosmological distance in X-Ray wavelengths, to perform very fine
and wide-band X-Ray spectroscopy of cosmic high temperature plasmas.
ASTRO-E also carries the Japanese Hard X-Ray Detector (HXD). The </FONT><FONT SIZE="-1" FACE="Arial">XIS
utilizes four X-Ray CCD cameras in conjunction with four of the x-ray
telescopes to cover an energy range of 0.4-10 keV with a typical energy
resolution of 100 eV. The XDS is an array of X-Ray micro calorimeters
which uses the fifth x-ray telescope and covers an energy range similar
to XIS with a typical energy resolution of 12 eV. The HXD is a combination
of well type phoswitch scintilators and Si Pin detectors and covers
a 10-700 keV energy range.</FONT></P>
<P>&nbsp;</P>
<P><B><FONT COLOR="#000099" SIZE="-1" FACE="Arial">Salient Features:</FONT></B></P>
<P><B><FONT COLOR="#000099" SIZE="-1" FACE="Arial">Project Start:</FONT></B><FONT
COLOR="#000099" SIZE="-1" FACE="Arial"> 2nd quarter 1995 <BR>
<B>Spacecraft Weight:</B> 1,696 kg <BR>
<B>Planned Lifetime:</B> 2 years with additional extended mission
<BR>
<B>Orbit:</B> 550 km with 31 deg inclination <BR>
<B>Launch:</B> M-V from Japan in 2000</FONT></P>
<P><B><FONT COLOR="#000099" SIZE="-1" FACE="Arial">Instrument
Complement:</FONT></B></P>
<P><FONT COLOR="#000099" SIZE="-1" FACE="Arial">X-Ray Spectrometer
(XRS)<BR>
X-Ray Imaging Spectrometer (XIS)<BR>
Hard X-Ray detector (HXD)</FONT></P>
<P><FONT COLOR="#000099" SIZE="-2" FACE="Arial">Last Updated:
3/29/99</FONT></TD>
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