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Hi, I bought one of these for use of my Celestron 9.25 a couple of months ago. Critical focus for planetary imaging is essential and it's very very difficult to achieve wth all the focus jiggles and mirror shift. The Meade micro-focusser has really solved this problem and greatly improved the quality (and reliability) of my results. The focussing unit seems solid and precise, though the handbox seems a bit cheap and nasty and it chews the batteries (8x AAAs).
I must confess to not having any experience to the alternative electric focussers available, but I'd be reluctant to part with the money required for more expensive units. The meade cost me $399.
cheers,
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