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201. http://xmm.vilspa.esa.es/docs/documents/CAL-TN-0062-1-0.pdf
... Since the beginning of the mission steady health and contamination monitoring has been performed by the XMM-Newton SOC and the instrument teams. ... The two EPIC-MOS cameras use front illuminated EPIC-MOS (Metal-Oxide Semi-conductor) CCDs as X-ray detectors, while the EPIC-pn camera is equipped with an EPIC-pn (p-n-junction) CCD which has been specially developed for XMM-Newton. ... It is clearly seen that the EPIC-MOS energy resolution at low energies is much better than that of EPIC-pn. ...
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Ссылки http://xmm.vilspa.esa.es/docs/documents/CAL-TN-0062-1-0.pdf -- 673.9 Кб -- 10.11.2005
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202. http://www.aaa.org/EyepieceFiles/aaa/2008_04_April_Eyepiece.pdf
... Planets, moons, asteroids and comets contain resources such as water and minerals, valuable to astronauts and potentially to Earth, with other elements such as platinum as a byproduct of the extraction. ... Lewis hoped we could defray cost s b y "bringing inexpensive products down to Earth. ... We could make travel to Mars cheaper by "bringing just enough fuel [to get there], then use the Martian CO2 atmosphere to go home. One ton of equipment will be able to produce 100 tons of fuel." ...
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Ссылки http://www.aaa.org/EyepieceFiles/aaa/2008_04_April_Eyepiece.pdf -- 698.2 Кб -- 22.02.2015
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