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Re: astronomical vs. terrestrial telescopes

Galileo used a diverging lens as the eyepiece of his
refracting telescope. This has the advantage that the image is erect
rather than inverted.

Regards,
Steven Ratliff




Steven T. Ratliff
Associate Professor of Physics
Northwestern College
3003 Snelling Av. N.
Saint Paul, MN 55113-1598

Internet: stratliff@nwc.edu (or str@nwc.edu)