Something has struck me about planetariums, when you go to build your own, the theater is daunting. We start out wanting to recreate that 'surrounded by the starry heavens' experience, but soon learn an even modest dome is well .. celestial in size. But do we always have to build the whole dome? How good really is our peripheral vision - we cant really SEE the whole vault of heaven all at once usually.
There is a solution .. for those of limited space, or budget . build a half dome. Like the Renwalls Cosmorama of old, can the projector not turn and provide differing directional views on a half dome surface? Suddenly building requires alot less ..
Put your projector on a turntable .. seat your audience all in one direction just like the tilt dome big boys do .. and have at it.
Full dome of course will always be special. But you can build a halfway house for alot less and reap most of the same benefits ..
and isnt getting there, as always .. half the fun?
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