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I had the SW 10" collapsible for years. The tubes are robust, so you only have to do a very occasional collimation, not each time you extend it. If you have
any interest in doing basic imaging, make sure that the scope you buy can
be used for that purpose. Some Newtonians[Dobs, for our purposes] don't have enough back focus to allow for attaching of a camera. All SW Newts do.
Both parts of the 10" are easy to carry, but the 12" is a bit more of a beast,
unless you are youngish and sturdy.
raymo
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