Need Digarams for workings ofan Apochromatic Refractor

[that_guy]

Heyyy folks, doing me physics assignment, need diagrams to finish it off but i can find any detailed diagrams illustrating the light path and the lenses of an apochromatic refractor. also it would be awesome to get some imformation about it. :)

thanks,
tony

[ballaratdragons]

Here ya go Tony: http://c2431622.cdn.cloudfiles.rackspacecl oud.com/wp-content/uploads/2008/07/refracting.gif

Here's the whole section on it: http://www.universetoday.com/15968/refractor-telescope/

or this one: http://findascope.com/glossary.html

This one shows the EP as well: http://calgary.rasc.ca/telescopes/index.htm

[telemarker]

Could try this page (http://starizona.com/acb/basics/equip_telescopes_refractors.aspx)

[that_guy]

heyy ken, Thanks for the sites, do you have any sites on apochromatic refractors? i needed imformation about achromats as well.... haha forgot to add but your informations got it all :thumbsup:

thanks

[that_guy]

haha.. thanks keith... needed that digram :) thanks

[telemarker]

Twas a pleasure.

[ballaratdragons]

This is, of course, all your own work isn't it Tony ;)

[that_guy]

haha.. yes ken :whistle: maybe?

[that_guy]

also ive got this formula 1/F = (n´ - 1) (1/r1 - 1/r2) where the r2 is the radius of the curvature at the back surface.. is this the eyepiece?
*edit* never mind :P found the answer in chat room thanks marki!!