The Narrowband Channel | Skywatcher 80ED Scope Review @TheNarrowbandChannel | Uploaded November 2021 | Updated October 2024, 1 day ago.
This video review is all about the Skywatcher 80ED which is a f7.5 scope natively and a 600mm focal length. With its focal reducer it is a f6.3 and will have a 522mm focal length. Rather slow for todays standards but it will have excellent image quality since it is much easier to correct a slower scope anyway. I suppose you could use a 0.8x focal reducer for a little more speed but with only generic options available that are not dedicated ones they may not give as sharp a result.

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