I wanted a solar scope, safe and portable, for group sun spot viewing. The designs I looked at did not lend themselves to group viewing , or the safety I wanted, especially with children. After many hours at the hardware store I designed the SUN GUN.

 

The SUN GUN consists of a 60mm dia. 900mm fl. optical tube assembly (Earth and Sky-Telescopes, www.astrosales.com/scopes.html), mounted inside of 3" dia. PVC, connected to a 20" flower planter with a rear projection screen mounted on top. When connecting the PVC parts lightly sand each connection and apply PVC cement to both connections. Home depot PVC was used through out the design, found some suppliers to have a different inside diameter.