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        <li>Tuesday, 21 May 2013</li>
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<div id="contentwrapper"><div id="rightcontent"><div id="headimage"><img height="100" width="530" alt="National Space Science Data Center Header" src="/logo/nssdc_header.jpg"/></div><h1>ABRIXAS</h1><p><strong>NSSDC/COSPAR ID:</strong> 1999-022A</p><div class="twocol"><div class="urone"><h2>Description</h2><p>
          ABRIXAS (A BRoad-band Imaging X-ray All-sky Survey) was a German astronomy spacecraft intended to monitor X-ray emissions in the universe. The imaging telescope, operating in the 0.5-10 keV X-ray range, was to map an estimated 10,000 new sources. The instrument was actually seven Wolter-1 telescopes of focal length 160 cm each with 27 nested mirrors of length 30 cm and diameters shrinking from 16.3 cm to 7.6 cm. The seven fields of view, each of 40 arc-minutes diameter, were separated by 7 degrees from each other. Additional details may be seen at:
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<a href="http://wave.xray.mpe.mpg.de/abrixas/mission/">http://wave.xray.mpe.mpg.de/abrixas/mission/</a>
          </p></div><div class="urtwo"><h2>Alternate Names</h2><ul><li>A BRoad-band Imaging X-ray All-sky Survey</li><li>25721</li></ul><h2>Facts in Brief</h2><p><strong>Launch Date:</strong> 1999-04-28<br/><strong>Launch Vehicle:</strong> Cosmos<br/><strong>Launch Site:</strong> Kapustin Yar, Russia<br/><strong>Mass:</strong> 550.0 kg<br/></p><h2>Funding Agency</h2><ul><li>Deutsche Forschunganstalt fuer Luft- und Raumfahrt (DLR, nee DFVLR) (Federal Republic of Germany)</li></ul><h2>Discipline</h2><ul><li>Astronomy</li></ul><h2>Additional Information</h2><ul><li><a href="spacecraftOrbit.do?id=1999-022A">Launch/Orbital information for ABRIXAS</a></li><li><a href="spacecraftTelemetry.do?id=1999-022A">Telecommunications information for ABRIXAS</a></li></ul><ul><li><a href="experimentSearch.do?spacecraft=ABRIXAS">Experiments on ABRIXAS</a></li><li><a href="datasetSearch.do?spacecraft=ABRIXAS">Data collections from ABRIXAS</a></li></ul><h2/><p>
          Questions or comments about this spacecraft can be directed to:
          <a href="mailto:nssdc-request@lists.nasa.gov?Subject=NMC Comment/Question: ABRIXAS (1999-022A)">Coordinated Request and User Support Office</a>.
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        <li>NASA Official: <a href="mailto:Edwin.J.Grayzeck@nasa.gov">Dr. Ed Grayzeck</a></li>
        <li>Curator: <a href="mailto:Ed.Bell@nasa.gov">E. Bell, II</a></li>
        <li>Version 4.0.22, 21 May 2013</li>
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