I was asked to give a talk at Stellafane July 22nd on the Chief and Jones medial among other things. I will also bring along my Chief and my medial refractor if I can get them packed into my car.
My solar projector is the best on the market today bar none and there is no better way to view the sun for the coming eclipse. Solar projectors are available in time to ship before the eclipse. See it in my You Tube video: https://www.youtube.com/watch?v=pgQOsK6RdC4
Well that stinks, the 325 mm focal length lens was dropped from the available lens catalog so you can’t make the design I had posted here unless you make the lens. However there is one more 6 inch design that uses commercial lenses and hopefully they will still be available. I uses 220 and -250 mm lenses giving a little bit shorter BFL, a final F ratio of F/7.6 and a Strehl of .993.