A friendly group for folks interested in building and/or operating a planetarium. There are a wide range of possible uses for small planetariums ranging from traditional astronomy education, to some of the new opportunities in wider science education, visualisation, art, and entertainment offered by fulldome digital projection.
Backyard enthusiasts, operators of portable planetarium businesses or permanent planetariums, equipment vendors, and content suppliers are all welcome.
If you are new to this group then be sure to check out the links on the left, in particular, the photo gallery and please contribute to the poll questions. If you have some good photos of your own small planetarium related project then please contribute to the photo gallery.
Image caption: Small fibreglass dome at the Adelaide film festival 2009. Exhibition by CompanyOf.
... As Paul says, what manufacturers list as contrast is sometimes not close to reality. Projectors that are not as bright can be listed to have more contrast
... I forgot to comment on this.... There are very few people indeed for which a 1920x1920 fisheye would be appropriate, namely those with a 4Kx2K projector
... I was referring to the Optoma Ep1080 which is 3600 ansi lumens. ... Hard to tell, these rating are imprecise. ... Indeed. ... The Optoma Ep1080 is about