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This sounds like a cool project. Two things came to mind:
1. Years ago I looked into projectors for something similar. That is to say it was supposed to project straight up. Back then the problem was going to be that the projectors were not designed to be mounted pointing up or down. The heat sinks and fans needed to be horizontal. Bulb ($$$!) life would have been greatly reduced. Of course projectors have evolved so much from then that this might not be an issue at all now.
2. Lasers can punch through high ambient light levels and they (laser video projectors) are coming down in price everyday.
Erich Rose
Erich Rose Design
807 The Living End
Austin, TX 78746
512-626-9930; [log in to unmask]
http://www.flickr.com/photos/erichrose/
On May 30, 2012, at 12:18 PM, Dan Zevin wrote:
> ISEN-ASTC-L is a service of the Association of Science-Technology Centers
> Incorporated, a worldwide network of science museums and related institutions.
> *****************************************************************************
>
> Dear Colleagues,
>
>
>
> UC Berkeley is currently designing the lobby of the new Campbell Hall, which is home to the Astronomy Department. The foyer will be 20'x30' and will have a curved ceiling, like a planetarium dome.
>
>
>
> We would like to project images on this ceiling, perhaps from a pedestal in the middle of the foyer that projects upward to the dome. Our budget would probably be under $50K and installation is approximately two years from now; however, the architects would like to know as much as possible at this time. Please note too that light levels will undoubtedly be high in the foyer (compared to a regular planetarium)
>
>
>
> If you have recommendations for the best possible projector, please let me know.
>
>
>
> Thank you!
>
>
>
> Dan
>
>
> ***************************************
> Dan Zevin
> Public Education Specialist
> Space Sciences Laboratory
> 7 Gauss Way, MC 7450
> University of California, Berkeley
> Berkeley, CA 94720-7450
>
> (510) 642-8326
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> AST:7731^29u18e3
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>
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