Just wondering about whether anyone knows if a finderscope can be used
safely to project the image of the sun onto paper. Isn't a
finderscope like a tiny refractor? It should be able to project a
clear enough image of the sun to see sunspots.
What I don't know is if such a procedure would eventually damage a
finderscope or not. I guess it depends alot on the apeture of the
finderscope. One of my books "City Observing" ( Sky & Tel press )
says that inexpenive "refractors" 40mm to 60mm should present no
problem. Just be careful not to look through it though.
Later,
Rol