On 30 Dec 98, at 12:57, George M. Anderson wrote:
> >Hi Shawn,
> >
> >the lens is a Russian mirror lens and has only one aperture value of 1:5,6.
> >I have bought the lens on a flea market for 160 DM (95 US dollar). I think
> >it is difficult to buy it in Canada/US, because the Polish dealers cannot
> >go so far. As an amateur telescope version, you can buy it from ITS (at
> >least the 1000mm version), they have a web site. Interesting for people,
> >who are interested in technic is, that the lens is of the so called
> >Maksutov type. Maksutov was an Russian physicist, who developed this type
> >in the fourties and published it in an American (!) magazine. The front
> >element is an "thick meniscus" with the second mirror on its inner side.
> >This front element eliminates coma abberation, the chromatic abberation is
> >very low, because of the mirror elements.
> >Matthias
> >
>
> Matthias;
>
> I looked at your remarkable lion photos this AM. That they were taken with a
> mirror lens makes them even more incredible. Very nice work and what a
> bargain at $95!
>
> George
>
Thanks for the info on this lens - very nice results and surprising
contrast for a mirror lens.
Shawn Wright, I.T. Manager
Shawnigan Lake School
swright@xxxxxxxxx
http://Zuiko.sls.bc.ca/swright
http://www.sls.bc.ca
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