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What did Janssen discover?
Zacharias Janssen was the first person to invent the optical telescope. He is also known as the inventor of the compound microscope.
Is theHubble telescope is an optical telescope?
The Hubble Space Telescope has a number of instruments, but the primary one is an optical telescope.
Why are reflecting telescope and refracting telescope considered as optical telescope?
"Optical", in this case, simply means that they work with light.
How old was the Telescope Inventor when he made the Telescope?
82
Which is the best telescope?
optical
What kind of telescope are most of the large optical telescope?
Reflector.
What is the advantage of using a non-Optical telescope over an optical telescope?
See things that don't shine in the visible spectrum.
Who invented the optical light telescope?
me
Who invented the optical disk?
David Gregg was the inventor of the optical disk.
How do radio telescope different from optical telescope?
Radio telescopes collect radio waves. Optical telescopes capture visible light waves.
Where can you get the optical components to repair an old telescope?
you can get the optical components to repair an old telescope at http://www.astromart.com/classifieds/details.asp?classified_id=644695. Another site is www.Fixya.com/Telescope+Repair
Why doesnt the surface of a radio telescope have to be as flawless as the surface of a mirror in an optical telescope?
The surface of a radio telescope doesn't have to be as flawless as the surface of an optical telescope because the radio telescope is collecting radio waves, something that will not be affected by faults in the glass. Optical telescopes, on the other hand, are collecting light, where faults in the surface can interfere with the image.
