Xref: utzoo sci.astro:11716 sci.optics:52 alt.books.technical:231 sci.bio:4424
Path: utzoo!mnetor!geac!torsqnt!news-server.csri.toronto.edu!bonnie.concordia.ca!clyde.concordia.ca!nstn.ns.ca!news.cs.indiana.edu!ux1.cso.uiuc.edu!news
From: mcdonald@aries.scs.uiuc.edu (Doug McDonald)
Newsgroups: sci.astro,sci.optics,alt.books.technical,sci.bio
Subject: Re: Making Your Own Microscopes
Message-ID: <1991Feb15.004101.10578@ux1.cso.uiuc.edu>
Date: 15 Feb 91 00:41:01 GMT
References: <7991@exodus.Eng.Sun.COM> <1991Feb14.051740.14508@ms.uky.edu>
Sender: news@ux1.cso.uiuc.edu (News)
Organization: University of Illinois at Urbana
Lines: 34


In article <7991@exodus.Eng.Sun.COM> fiddler@concertina.Eng.Sun.COM (Steve Hix) writes:
>
>As to making more sophisticated microscopes, you could probably develop a 19th-
>century-Zeiss type microscope from that start pretty easily.  That would be
>about the same scale of difficulty as making a small refractor, but smaller.
>

You could also make a Cassegrain reflecting microscope easily: 
It uses one large concave mirror and one small convex one, both spherical.
I have successfully made these from commercial mirrors. These
can get to numerical apertures of roughly 0.5.


Doug McDonald

                                    * 
                                     *
                                      *
                                       *
                                       *
                                        *
                             *          *
                              *
            Object *          *                                        *Image
                              *
                             *                                        
                                        *
                                        *
                                       *
                                       *
                                      *
                                     *
                                    *