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X-ray Study of Low-mass Young Stellar Objects in the ρ Ophiuchi ...

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Chapter 4InstrumentationIn this chapter, we show <strong>the</strong> basic properties <strong>of</strong> <strong>the</strong> Chandra satellite and its <strong>in</strong>struments. Moredetails are found <strong>in</strong> <strong>the</strong> Chandra Observatory Guide 1 .Fig. 4.1.— Schematic view <strong>of</strong> <strong>the</strong> Chandra satellite ( c○NASA/CXC/SAO).4.1 Overview <strong>of</strong> <strong>the</strong> Chandra X-<strong>ray</strong> ObservatoryThe Chandra X-<strong>ray</strong> Observatory (CXO: Weisskopf et al., 2002, Figure 4.1) was launched by NASA’sSpace Shuttle Columbia on July 23, 1999. The total weight and length are ∼5,000 kg and ∼10 m.The orbit is elliptical with <strong>the</strong> perigee and apogee altitudes <strong>of</strong> ∼16,800 km and ∼132,000 km,1 http://asc.harvard.edu/udocs/docs/docs.html .21

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