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Old 28-12-2010, 12:40 PM
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Riv39 (Chris)
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Join Date: Sep 2010
Location: Sydney
Posts: 21
Trouble collimating secondary mirror on a Newtonian

Hi, help please. I am having no end of trouble collimating my new Sky-Watcher 8" Newtonian (which was not collimated out of the box in fact the primary mirror locking screws were all loose). I am trying to bring my secondary in line using my GSO laser collimator but I just can't seem to get it right in the sweet spot no matter what combination of screw adjustments I try. I can align the primary so that the laser returns back on itself but the secondary is not right as stated above.

I will confess that this is the first time I have tried to collimate any scope but from my research doing the secondary first is correct.
Any suggestions would be appreciated.

Thanks Chris

Last edited by Riv39; 28-12-2010 at 01:28 PM.
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