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Results tagged with telescope
Search options questions only
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user 103
Telescopes are devices that collect data (usually electromagnetic spectrum, visible or otherwise) to better resolve distant objects.
9
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answers
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What is the current state of affairs concerning space telescopes?
With the Hubble telescope to be decommissioned any time now, and the James Webb Space Telescope at least in 2018 and unlikely to be active while Hubble still remains, will there be a gap when we have no … space telescope at all? …
- 56k
12
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2
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What savings allowed James Webb telescope to be lighter than Hubble?
Wikipedia states:
The telescope has an expected mass about half of Hubble Space Telescope's, but its primary mirror (a 6.5 meter diameter gold-coated beryllium reflector) will have a collecting area … Hubble telescope is about 11.000 kg, while J.W. - 6,500 kg.
It's also larger. Hubble: 13.2 × 4.2 m vs J.W. - 20.1 m × 7.21 m.
Why such a big difference? …
- 56k