I know that Mark Dakins has one of those projectors that you describe Deloy; he set it up at Novell when we had the Mercury Transit in the late 90's -- it worked beautifully. /R --- On Wed, 5/23/12, D P Pierce <starsbirdsglyphs@gmail.com> wrote:
From: D P Pierce <starsbirdsglyphs@gmail.com> Subject: [Utah-astronomy] Solar Projection To: utah-astronomy@mailman.xmission.com Date: Wednesday, May 23, 2012, 8:36 PM When we joined SLAS in the early 90's the sun parties were held at Liberty Park. One of the SLAS members had an interesting solar projector. Mounted on a board was a 4" f/300! doublet. Behind it was a 3 1/4" elliptical mirror which was on a swivel mount. The image was projected onto a screen set up 100' away. A 100' string was tied to a nail on the front of the board. The image was about a foot in diameter. I was really impressed. He had bought it as a kit a few years before at RTMC. I always looked for it when I was at RTMC but never found one. One of the years we were at the North Rim Grand Canyon Star Party there was a 65% partial eclipse. We had 5 solar scopes set up with about 300 hundred people lined up. Karen was running our Astroscan with a Thousand Oaks Optical filter on it. I walked around the crowd explaining what was happening while projecting an image onto the wall of the visitors center using a mirror in one hand and a piece of cardboard with a hole in it in the other hand. I love solar projection!
Deloy Pierce _______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy
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