Sorry that was an f4.0 500mm, (still amazing), they sold it as the Sigma Ultratel(sp?). Check out the internet wayback machine's stored copy of Monahan's "Cult Classic" lenses.
<http://web.archive.org/web/20041209100811/http://medfmt.8k.com/third/cult.html#sigma> I saw one sell on e-bay once. The very rare and desirable Vivitar S1 400mm solid cat, (about 800 originaly sold), usually goes for a few hundred dollars. The F4.0 Sigma sold for close to $1000.00... -----Original Message----- >From: Joseph McAllister <[email protected]> >Sent: Jan 12, 2009 11:22 PM >To: Pentax-Discuss Mail List <[email protected]> >Subject: Re: PESO: Tonights Full Moon > > >On Jan 12, 2009, at 19:52 , Peter Alling wrote: > >> Sigma made a 600 f4.0 mirror tele... > > >You sure? I have a Sigma 600mm mirror, and it's an ƒ8.0. > > >Joseph McAllister >[email protected] > >http://gallery.me.com/jomac >http://web.me.com/jomac/show.me/Blog/Blog.html > > > > > >-- >PDML Pentax-Discuss Mail List >[email protected] >http://pdml.net/mailman/listinfo/pdml_pdml.net >to UNSUBSCRIBE from the PDML, please visit the link directly above and follow >the directions. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.

