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I know Marcus uses one on his TOA152... the images he gets with it are fantastic... Although yes, slowing to F12 could be a bit of a struggle..
My question is, why spend $500Au to stretch your refractor to 1280mm FL when you could use your VC200L + 6.4 reducer to get 1260mm FL at a much faster F/ ratio? Seems like false economy to me..
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