Quote:
Originally Posted by asimov
Just a bit of useless info > The commercial SW 14" newt primaries are all conical.
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yes, interesting bit of history there. As Skywatcher bought Celestron , the mirror blanks in the 14" are the same ribbed conical ones as used in the Celestron 14"'s since the 1970's . ( At least as far as I've seen in the Orion Dobs which are made by Skywatcher for Orion ) .