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Old 22-11-2011, 09:13 AM
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Robh (Rob)
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Join Date: Feb 2009
Location: Blue Mountains, Australia
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Quote:
Originally Posted by shane.mcneil View Post
I've got this one. Now to sound really dumb, what is AP?
The Orion collimating eyepiece is a type of Cheshire eyepiece, which was what Brendan was referring to.
AP I think is Astro-Photography.

I am surprised that you can't get the secondary mirror high enough. When you collimate with the Cheshire, can you see the whole primary mirror with clips and all. If so, it should be fine. You might have to pull the cheshire out a bit to see the whole mirror.

Regards, Rob
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