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    Australian Sky & Telescope

    Pipe-fitting mounts

    Jun 03, 2020 2 minutes
    by Jerry Oltion

    DREW SORENSON is a refractor nut. He’s also an amateur telescope maker. So, not surprisingly, he’s made several refractors, his largest being a 150-mm f/10 with lenses he ground himself.

    Drew contacted me after he read my article on ‘hobby killers’ ( Feb/ Mar 2020, p. 36). He said, “I

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