Share 'Realizing a home-built planetarium: specific issues (planet projection, dome construction, cost)'

Greetings. I'm a one-man planetarium builder with a lot of motivation, some engineering skills, a too-limited budget, yet a continued desire to perfect my projector. I'm working on refurbishing my 16" drum-type projector and fitting it with ancilliary projectors and axis drives that I could only hope to do when I started this project as a teen. The real strength of my device is the drum, which in…