Thread: Do refractors have to be collimated?
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Old 09-03-2007, 05:09 PM
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ballaratdragons (Ken)
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not sure about others refractors but you can collimate ED's when they need it. The collimation on ED's is done by slightly loosening the 3 screws holding the focuser in, and moving the focuser body, then re-tighten the screws.
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