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Re-read my reply to your very similar thread on 25/12/05.
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Thanks John sorry to repeat myself.. I know I'm being thick
I'm just not sure what the secondary adjustment will involve..
When you say the distance of the secondary from the Primary, is that what the center screw on the spider is for? I have the 3 tilt screws and a screw in the center.. does that screw raise and lower the secondary mirror?
Thanks for your patience! Bruce.