Comment Comment by mturmon By now, it's well-known that HST was based on spy satellite designs via the mirror-making technology, as you say.See under "size and mass" at: https://en.wikipedia.org/wiki/KH-11_KENNENAccording to that page, NASA moved the primary mirror diameter from 3.0m to 2.4m to match the already-developed mirror-making technology. parent mturmon 3 years ago
See under "size and mass" at: https://en.wikipedia.org/wiki/KH-11_KENNEN
According to that page, NASA moved the primary mirror diameter from 3.0m to 2.4m to match the already-developed mirror-making technology.