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Old 14-05-2016, 09:03 PM
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janoskiss (Steve H)
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Join Date: Jan 2005
Location: Sale, VIC
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As long as the primary mirror is accurately centre spotted, you can collimate the scope quite precisely using a Cheshire style visual collimating tool. The shorter FL does make the optics less tolerant to imprecise collimation, but at the same time the shorter tube makes it easier to do be precise because you can reach the collimation screws while looking through the focusser. Laser collimators have their pitfalls and unless you get a fancy expensive one a Cheshire is better IMO.
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