Solar Projectors Available

I managed to build a few more solar projectors and they are now available for $240 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.

 

 

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6 inch F/8 Chief

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.

 

6inchf8 220-250