20 inch f8 Chief Ed Jones designed and a 17 f9 Zanbuto Wide Band Chief Mike Jones designed .Both unobstructed telescopes .
Quote:Thanks, just now i degraded to 600 grit and removed the scratch it and i also completed 800. Mirror is fine now.As you know it is not possible to go for 1000 grit. Is it possible to move to Pitch And cerium oxide?
I am from New Zealand under nice dark southern hemi-sphere skies.Been in and out of astronomy and telescope making for 50 years now. Slogan: The heavens declare the glory of God. Scopes: 6" f6.5 Newt. 14" f5.09 Hubble Optics powered Dob. 25.2" f4.68 Strut Dob.(Home grown primary) Eyepieces. ES82 30mm,24mm,11mm 8.8mm.TV Nagler 20mm type 2.TV Plossl 7.4mm.Some GSO eyepieces and barlows. WO Binoviewers.