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The Cassegrain has a paraboloidal shaped main mirror.

The Ritchey-Chrétian has a hyperboloidal main mirror.

I have a Schmidt-Cassegrain which has a spherical main mirror.

Dall-Kirkham telescopes have an ellipsoidal main mirror.

The secondary mirror can have different shapes as well but I won;t get into hose. That's a separate issue.

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8y ago
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14y ago

a reflecting telescope is bigger because it uses mirrors, not lenses, and mirrors r bigger! :)

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Q: Which is bigger a reflecting or refracting telescope?
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Related questions

Is the difference between a refracting telescope and a reflecting telescope?

A reflecting telescope uses mirrors while refracting telescopes uses lens. The refracting telescope also had chromatic aberration and bad resolution while the reflecting telescope had none of these.


What is a refracting and a reflecting telescope?

A refracting telescope is a type of telescope that has a large thin lense at the front and a smaller thicker lense at the end where the eyepiece is. Refracting telescopes use lenses unlike reflecting telescopes that use mirrors to reflect the light. This is a good image of a refracting and reflecting telescope: [See related link]


How are reflecting and retracting telescopes different?

A reflecting telescope is different from a refracting telescope because a reflecting telescope uses a concave lens, a plane mirror, and a convex lens. While a refracting telescope uses two lens.


Did Galileo invent the reflecting or the refracting telescope?

no


Which telescope is bigger refracting or reflecting?

"To build a large refracting telescope would require very strong supports to hold large enough lenses. These supports would tend to block out important light. So the refracting telescope is limited in its use. Today most large telescopes are reflecting telescopes." ~ BYU Home Study Astronomy course


What is the difference between a reflecting telescope and a refracting telescope?

A reflecting telescope uses mirrors while refracting telescopes uses lens. The refracting telescope also had chromatic aberration and bad resolution while the reflecting telescope had none of these.


What other things were developed using the refracting telescope design?

the reflecting telescope was!!


Why did Isaac Newton invent the telescope?

Newton did not invent the telescope, he invented the reflecting telescope. The reflecting telescope was a major improvement over the distorting refracting telescope.


Which type of telescope uses concave mirrors to increase the size of the image being viewed?

Refracting


Is refracting telescopes bigger then reflecting telescopes?

No


What are some of the advantages of reflecting telescopes over refracting telescopes?

Size... a reflecting telescope with the same power as a refracting telescope is much shorter. This is because, in the reflecting telescope, the incoming light is bounced off mirrors (often more than once) which means the physical length is much shorter than an equivalent refracting model.


Why are reflecting telescope and refracting telescope considered as optical telescope?

"Optical", in this case, simply means that they work with light.