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Takahashi MT160.
I pointed one out for a friend who bought it, and a very nice small newtonian it is too.

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But that's an f/6. What I think the OP has in mind are slower instruments - my 8" planetary telescope is an f/6 and it works extremely well, but one wonders how it would perform around f/8 on occasion. A 6" f/10 would be the equivalent for planetary specs.

Best,
Mark

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