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other parts:
1. rear flange and barrel assembly - this holds the primary mirror and the field flattener lenses - took a while to get the design thinking right here.
2. the primary cell is a simple 9point system with push-pull bolt collimation. A flange at the base of the primary baffle tube holds the mirroe down with a cork washer in between.
3. the secondary conical baffle was TIG welded from aluminium
guy
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