Rich, I had a 6" Dynascope at one time. I found it in a pawn shop. The mirror was so dirty I was not sure there was a mirror in the scope at all! I tested the mirror and found it was a great sphere. Tha't OK if you want a sphere, but a parabola at f8 is quite different than a sphere - at least 1/2 wave. I have always wondered if it was just that scope, or were all Dynascopes spheres? How about yours? Chuck - is yours a sphere? Brent --- Richard Tenney <retenney@yahoo.com> wrote:
Got the following from a fellow on the Criterion Dynascope list today. Amazing webcam image obtained from this humble classic 6-inch newtonian (I'm still the original owner of a vintage 1972 RV-6, still my preferred grab-n-go scope)...
--------------------------------------------------- This was captured with a Philips ToUcam Pro webcam through a Tele Vue 2x barlow with an extension tube:
http://www.unm.edu/~abqtom/images/Planets/Saturn/2004-03-22-TEW-Sat.jpg
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