For sale a never been used Nova-Optics 18" F5 Newtonian mirror, enhanced Al coating (96% reflection) with protected SiO2. It's my unfulfilled project. Coating still looks good (inspected in March 2018), no pin holes/ scratches, still in its original wooden box. I always put it inside my house to reduce contraction-shrinking of the coating due to weather. It has a Ronchi test photo of it. It's straight lines, certified & signed by Steve L Dodds. $ 2300/ make offer. My email:
joeyahoo1@hotmail.com. Thanks.