- Galileo's Telescope
The early history concerning the development of the first astronomical telescopes.
http://es.rice.edu/ES/humsoc/Galileo/Things/telescope.html
(Added: Sun Oct 27 2002)
- Making a Galilean Telescope
A Galilean telescope is defined as having one convex lens and one concave lens. The concave lens serves as the ocular lens, or the eyepiece, while the convex lens serves as the objective. Find out how to make this kind of telescope.
http://es.rice.edu/ES/humsoc/Galileo/Student_Work/Astronomy96/mtelescope.html
(Added: Sun Oct 27 2002)
- Refracting Astronomical Telescope
This Java applet simulates a simple refracting astronomical (inverting) telescope, consisting of two lenses which are called the objective and the eyepiece (ocular).
http://home.a-city.de/walter.fendt/phe/refractor.htm
(Added: Sun Oct 27 2002)
- Refracting Telescopes
The direction of light propagation is changed at the boundary of glass and air by refraction. By designing lenses having the right curvature, this principle can be used to gather and focus light.
http://csep10.phys.utk.edu/astr162/lect/light/refracting.html
(Added: Tue Oct 29 2002)
- The Refractor
Most every-day telescopes and binoculars use lenses to gather the light which we see through an eyepiece. Astronomical telescopes that use lenses in this way are called Refracting Telescopes because the objective lens (at the end furthest from the eye) refracts the light to a focus which is magnified by the eyepiece.
http://www.rog.nmm.ac.uk/leaflets/telescopes/telescopes.html#Anchor2
(Added: Sun Oct 27 2002)
- The USNO 26-inch Refracting Telescope
This telescope has a rich history. Completed in 1873 at a cost of $50,000, it was the largest refracting telescope in the world for a decade.
http://www.usno.navy.mil/USNO26in.html
(Added: Sun Oct 27 2002)
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