Newtonian telescope 35mm secondary mirror protect cover
Description
I've DIY a Newtonian Telescopde D160F1300 with a 35mm secondary mirror. However the secondary mirror was stick on 3D print part ONLY with a double-side tape. Then the secondary mirror fall apart from 3D print part, and crash on primary mirror. It damage my primary mirror . So I draw a 35mm secondary mirror cover in order to prevent the mirror fall apart again
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