Re:James Webb telescope reaches its final destination in spa...
by zionic on Tuesday January 25, 2022 @10:19AM
(#30072730)
Really sad that 30 years later we're only slightly larger. This is a major problem for telescopes since there are hard physical limits on resolution vs size.
[ Parent
| on HN ]
Re:James Webb telescope reaches its final destination in spa...
by jxcl on Tuesday January 25, 2022 @10:39AM
(#30072983)
They both look like they might be similar sizes in an illustration like that, but the Hubble mirror is 2.4 meters, whereas the JWST mirror is 6.5 meters, which has 7 times the light-gathering capability of Hubble.
Re:James Webb telescope reaches its final destination in spa...
by zelos on Tuesday January 25, 2022 @10:36AM
(#30072942)
It's 2.5 times the mirror diameter, which is 6.25 times the light collecting area.
Re:James Webb telescope reaches its final destination in spa...
by jon_richards on Tuesday January 25, 2022 @10:32AM
(#30072885)
Obviously it’s sad that we don’t have a larger Hubble-equivalent by now, but the Webb’s operating temperature makes it a completely different beast. It is massively expanding our capabilities in a way a larger Hubble wouldn’t. And I’m hopeful for the mid-term future, as the massive improvements in launch capability we’re seeing start to pay off.