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springs and things.....
Hi Bill - I do apologise to you: there are most certainly sec mirror holders that do not use the spring system - in fact the first 2 scopes I made (a 6" & 8" newt) did not employ them; though I should say I constructed the whole sec assembly myself.
Notwithstanding the above, I'm surprised that many/any nowadays don't use the spring tension system as it adds a degree of stability not inherent in the other set-up. Of course, I should say to you also leinad that you'd best check which system you have before accepting my procedures' description - but'd be surprised if it isn't spring-loaded!
Regards, Darryl.
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