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collimation knobs on SW 8" newt
I have an old blue tube SW 8" newt. Someone on here (IIS. I cannot remember whom now-sorry) modified and put extra tension knobs on the primary and bettr secondary knobs.
ONe of the plastic primary mirror knob handles has fallen off leaving the small bolt still in situ.
I want to take it out and replace the whole of the primary mirror fittings but where so I source these?
Thanks
Graham
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