Awash With Color – How We Light a 60 ft. Planetarium Dome

            As the planetarium projectionist I get the pleasure of sitting behind the scenes and watching the variety of reactions people can have to what they experience under our dome.  Being the person at the controls I can rotate the sky, fly you out to the furthest reaches of our universe, dazzle you with laser light, or make you tap your feet with our music and sound system.  There is certainly a myriad of ways I can impress people while in the planetarium.  It’s a very unique experience unlike what you would get in any other theater. 

            One of the things I see and hear from people after a show is that when they leave the theater they look around trying to figure out where everything is coming from.  All they see is a dome above, the circular wall of the theater, and a place to sit.
Where is all the sound coming from and where are the speakers?
Where do the lasers come from?
How do they get the image on the dome?
And, how do they make the dome change colors like that?

Continue reading