david b asked:


What is the difference between reflection and refraction. How do these enable astronomers to build telescopes? Do these principles work equally well for all six types of telescopes and how?
(The telescopes built to view each region of the electromagnetic spectrum?)

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$210,000 asked:


I know it’s possible to take tours of the famous/big telescopes.

Is it possible to look through these telescopes after purchasing a ticket?

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xxfoundthewayxx asked:


Telescopes functioning at visible wavelenfths don’t have to worry a bout thermal radiation from their surroundings, but infared telescopes do; infared detectors are usually cooled by liquid nitrogen or liquid helium. Why?

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hikikomori asked:


I want to add stargazing to my evening hobbies. What budget telescopes can I buy so I can view other planets in our solar system.. or far away stars?

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Karl asked:


The largest visible-light telescopes in the world use what device to collect as much light as possible before the light is brought to a focus (to act as the light bucket)?

A. a lens
B. a spectroscope
C. a CCD
D. a mirror
E. a valley in Puerto Rico

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dmg1969 asked:


I wonder if earth based telescopes or orbiting satellites such as Hubble will be able to observe the navy’s attempt to shoot down the disabled U.S. spy satellite. That would very interesting to see footage of.

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$20Nosebleed asked:


I need a REAL primary source on telescopes, one with good info. I’ve searched all over and cannot fins one, help please!
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at this point anything is fine, I can find a way to make it work.

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Maria puggum dog lover asked:


Any best “terrestrial” telescopes ? To look high up into the mountains into the woods with at birds? The view of them be 100 yards away. So many interesting animals to see. And Binocular’s won’t do.

Are there any available for under $600.00 US or as near as possible. Or Would a a monoscope do for less?

Thanks in advance.

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Cornelius85 asked:


I don’t know what professional astronomers will say about it but I think we are not going to see Earth and rest of solar system unless with powerful telescopes that can filter Oort Cloud that may block the view.

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lapis asked:


What is approximately the greatest distance out to which it is possible for ground-based telescopes to measure parallax? Also, why does such a limit on parallax measurements exist?

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