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Refractor at f/5 to f/6
Hello All,
I have a Meade 10" LX200 ACF and wish to add a small refractor piggyback for viewing and astrophotograhy. Because the main scope is f/10, I'd like to put a relatively short focal length refractor on it. I understand it could be hard or expensive to get good optics at shorter focal lengths ?. Any suggestions ?.
Cheers,
Brett.
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