4 ms·
Not an astronomer, but ease of maintenance comes to mind. If a mirror is defective on a ground-based telescope, it's easier to build a replacement and install i
by _verandaguy 7y ago
Not an astronomer, but ease of maintenance comes to mind. If a mirror is defective on a ground-based telescope, it's easier to build a replacement and install it. Hubble had a defective mirror which required an essentially dedicated Shuttle mission in the mid 90s.