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Interesting, yet funny at the same time.... right at the end I was impressed until I heard "Oh these lenses are amazing, some of them even have a strehl ratio of 0.8!" *facepalm*
Probably of no consequence to what they're using them for, but I'm sure there are far better dedicated astro optics out there at a similar cost? Are Canon coatings that superior to Takahashi, TEC, AP, etc? I guess speed is a big factor here too.
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