A few I enjoy, and a few more in the works
Plus when Granite Gap is up our 20"RC robotic ;>(
20.53N 100.45W San Miguel de Allende
Active instruments: 4.25" f/6 Newtonian on altazimuth Springfield mount with crutch tripod -- telescope for the handicapped. 12" f/6 Newtonian Telescope maker since 1958; always more to come? Well maybe just one more and it will be something very special Stellafane Awards: 1977 1st award for 4" f/6 refractor 1978 1st award for 4" f/4 Lurie Aplanat 1983 1st award for Newtonian smoking pipe For Sky and Telescope articles, please see Bio info.
A 60mm department store refractor started it all....
Living at a dark site, I make scope when I have the inclination. I also do woodworking, cycling and other outdoor activities
Quote:I don't see that hole as much of a problem in polishing or figuring. You just use a pitch lap with a hole trimmed away to a diameter slightly larger than the hole diameter. Have done this many times.
Ed Jones ........... The best data is an interferogram, the best analysis is from an honest optician.
Homemade 'scopes 8"f/7,6" f/5", 6"f/4, 4.25" Schiefspiegler,60mm Coronagraph,60mm H-alpha system, 4.25" White-light Solar Newtonian,solar spectroscope, 4" f/12, 4.5" f/16 & 6" f/12 Schupmann Medial refractors, 4" Celestar, 19 Stellafane awards 9 in optics Engineering = Taking what you have and making what you need.
10Micron GM2000HPS, 10Micron GM1000HPS, SW NEQ6 Takahashi FSQ106 EDX III, SW 190MN, TS Riccardi 130 f/5.2 SBIT ST-8300M, QSI 683wsg8 SX Wheel, Baader 2" filters, Baader 36mm filters, Astrodon QSI filters http://astro.frejvall.se