Thread: Collimation bolt PCD
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  #11  
Old 11-03-2007, 10:52 AM
Roo
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Join Date: Jan 2007
Location: Brisbane
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Thanks for your reply Nightstalker.

The Dobson plans call for a bolt PCD 2" smaller than the mirror diameter. This would be about 200mm PCD. This is quite a difference to your proposed 100mm PCD... Any basis for your suggestion?
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