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Review: Coronado SolarMax II 60mm Solar Telescope (now with Part 2)
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11-07-2011, 04:40 PM
John W
(John Wilkinson)
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Join Date: Jan 2010
Location: Castlemaine, Victoria, Australia
Posts: 1,372
To DaveM, Helical focuser is Ok to use but has a bit of backlash. JW
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