I have been looking into turning our geodesic dome in to a 360 projector screen, suggested by @stochastic_forest.
There are two currently know (simple) methods of semi-spherical projection.
- Use curved mirror and 1 projector.
- Use overlapping multiple projectors.
Challenges and Decisions
- Covering the dome suitable for projection.
- Projectors and mirrors.
- Software control.
http://omnido.me is an interesting software to look at. I think testing of ideas and options might be needed.
- is really interesting for me. I would love to see how/if that would work.
FWIW, there are a lot of videos on youtube for making parabolic “mirrors” for survival situations out of a space blanket/mylar. While likely not going to be effective in the end, it may be a really cheap way for you construct a hemispherical mirror to test with before splashing on anything pricey.
I really love the idea of having a slightly translucent material for the dome cover, so that the images could be rear-projected and viewed from the outside!
Some possibly useful stuff here:
Summary, use a tarp, fold it, add eyelets, lash down with guy ropes.
PS briefly looking at sewing instructions I think you’d go mad making it all as tiny little connected pieces - and you’d need to tape the seams to prevent leaking. Another reason why the single tarp solution may be better!
Some links for what I’m on about:
You’ll probably want the covering material to be white and reasonably translucent so the projection can be viewed from outside by a large number of people and at a distance as well as inside, something like this might do.
Lots of useful info on projection here.