In the words of a friend, "This telescope is a keeper!" ...The mirror size is an excellent compromise between good light gathering ability and portability.  Dobsonian telescopes are often difficult at high power because of the need to move the scope in two directions simultaneously.  The PortaBall doesn't have that problem.  I've gotten exquisite views of Jupiter...even at 250X I had no difficulty moving the scope to keep the planet centered.

-Mike Frasca, Physician; IL

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