I managed to build a few more solar projectors and they are now available for $200 and $15 shipping. These have a 79mm mirror and give the same 8 to 9 inch solar image. When these are gone that will be the end as I have no more lens cells.
I got a lot of compliments on the projector after the eclipse. I went to Tennessee to take these pictures.
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.