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Collimation: 12" Newtonian secondary mirror position question
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01-08-2011, 12:02 AM
astro_nutt
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Join Date: Mar 2005
Location: Melbourne
Posts: 1,013
Hi Dave.
While your laser is shining a dot on the primary via the secondary, move the focuser fully in and out and see if the dot moves on the primary. If it does then the focuser needs collimation.
Cheers!
astro_nutt
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