Re: Possible to make better Plossls?
- From: palsing <palsing@xxxxxxxxxx>
- Date: Tue, 24 Mar 2009 13:36:32 -0700 (PDT)
On Mar 24, 1:25 pm, Rich <rander3...@xxxxxxxxx> wrote:
Edmund Optics is offering "Tech Spec" aspherized achromats. These are
like what are being used in some camera lenses, "hybrid" aspheres
consisting of glass lenses with a polymer coating applied that
functions as the aspheric surface. Real aspheres (ground or molded
glass) still cost a fortune, but these are about $75-$95 a piece,
diameters running 9mm to 25mm and focal lengths from 12mm to 50mm. It
should be possible to create higher-performance Plossl eyepieces using
these.
http://optics.org/cws/product/P000006630
**************
I readily admit that I don't really know much about optics (although I
know what I like), but I do know that Harry Siebert
http://www.siebertoptics.com/
makes eyepieces on his kitchen table (or at least, he used to make
them there), and that he uses a lot of glass from Edmund.
Harry is a very friendly guy and can talk your ear off about his
eyepieces, and I suspect that he would be more than happy to give you
his opinion about this glass you are talking about.
\Paul A
.
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