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| 07-13-2022, 03:25 PM - 1 Like | #17 |
 Originally posted by photoptimist  (And it's a DSLR!  ) | |
| 07-13-2022, 04:08 PM | #18 |
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whatever it is, it's using a type of mirror lens Quote: JWST's optical design is a three-mirror anastigmat. . . Quote: A mirror lens, also known as reflex or catadioptric lens, was once very popular, but now it has been largely forgotten. It can see far and is small and light. | |
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