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Old 18-10-2012, 05:24 PM
astro_nutt
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astro_nutt is offline
 
Join Date: Mar 2005
Location: Melbourne
Posts: 1,013
Hi Fernando!
I have a friend who had a few collimation issues with his 12" dob. He was overtightening the lock screws on the primary mirror after he adjusted them. As soon as he moved the tube, the alignment was out. So now he tighten them ever so gently, no more than initial resistance is sufficient.
Cheers!
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