About to be a collectors item? Maybe not

My solar projector has been the best solar projector on the market but I have used up all the optical windows used to make the lenses and mirrors.  However I think I can make more lenses and if I can find a source of mirror I may offer these again.

A little history on these projectors.   Back in the late 80s when I was working for US Precision Lens they were taking apart a TV projection lens and getting rid of a nice lens cell which I acquired.  About the same time they were scrapping the optics for a mirror telephoto which had a nice 4.25 inch optical window.  I edged some down to fit the lens cells and ground a nice long radius on them.  I took them home and polished them on a LP66 lap on a polishing machine.  At first I used 3.1 inch secondary mirrors from Coulter but later aluminized the windows.

I got a lot of compliments on the projector after the eclipse.  I went to Tennessee to take these pictures.




One thought on “About to be a collectors item? Maybe not

  1. Mr. Jones,

    I am going to be in the Murfreesboro, Tennessee area to view the eclipse on August 21st. Do you have any of your solar projectors left ?

    Also, I just want to say that I’ve enjoyed several of your YouTube videos. I am making my first telescope mirror ( 8 inch) and I have followed many of your tips. I am now at a point where I am figuring my mirror but I am not sure what my Foucault test is telling me. Unfortunately, I have not been able to find anyone (even in a local astronomy club) that has been able to help me. I guess they don’t make their mirrors anymore. They buy them. So, my project has been set aside for a little while, while I either figure out the Foucault test, or build a bath interferometer from your online video.

    Anyway, I’d probably be interested in buying one of your solar projectors.

    Thanks Donald Brockhaus donald.brockhaus@windstream.net


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