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10 questions from this quiz
0.70.70.7 to 450450450 µm
To prevent thermal contamination
333 to 555 µm and 777 to 141414 µm
Photoelectric effect
300300300 nm
X-rays would penetrate normal mirrors
10610^6106 to 10810^8108 K
They use no mirrors at all
−268°-268°−268°C
Cassegrain mirror system
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