SRON_Spectrum_2016
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31<br />
<strong>SRON</strong> <strong>Spectrum</strong><br />
Mission facts<br />
> Uncertainty: If the mission is planned far<br />
into the future then it is still often uncertain<br />
whether the mission will go ahead, when<br />
the launch will take place exactly, and which<br />
instruments will be allowed on board.<br />
Missions that are currently flying often have<br />
a far longer mission duration than planned.<br />
The mission duration is often estimated<br />
conservatively to prevent disappointments.<br />
Chandra was planned to do service from<br />
1999 until 2004 but it is still working in<br />
<strong>2016</strong>.<br />
> Specialism: astronomers distinguish<br />
seve ral types of light and radiation: radio,<br />
infrared, visible light, ultraviolet, X-rays,<br />
gamma. Each telescope has its own special -<br />
ism and views the universe through differ ent<br />
eyes.<br />
> International: JAXA is Japanese, RKA is<br />
Russian, ESA is European, NASA is American,<br />
ESO is the European Southern Observatory<br />
in Chile, and EUMETSAT is the European<br />
organization for meteorological satellites.
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