Cassegrain

Hubble is a type of telescope known as a Cassegrain reflector and it's main mirror is

mirror.co.uk - Home 2010

The nearly 50-pound Schmidt-Cassegrain telescope, which combines a 14-inch mirror and lens, is easy to use, Olin said.

At Fairfax park, amateur astronomer helps to bring stars down to Earth Holly Hobbs 2010

Schmidt-Cassegrain telescope is a reflector, but you look through the back.

Learn: Identify constellations, stars, planets and how to navigate at night maryrobinette 2008

I'm coming down on the side of the Meade LX200GPS 12 Schmidt-Cassegrain.

Learning From the Stars 2005

“It was Monsieur Cassegrain who persuaded me to go with his daughter when she got married.”

Maigret and the Loner Simenon, Georges, 1903- 1971

“It was Monsieur Cassegrain who persuaded me to go with his daughter when she got married.”

Maigret and the Loner Simenon, Georges -101 1971

[20] On comparing the Cassegrain telescopes with a small convex mirror, to the Gregorian telescopes with a small concave mirror,

Biographies of Distinguished Scientific Men Arago, Francois 1859

Legault teamed up with Emmanuel Reitsch to create the clip, using imagery from a Lumenera Skynyx L2-2 camera mounted on a Celestron EdgeHD 14-inch Schmidt Cassegrain telescope on an automated tracking system.

msnbc.com: Top msnbc.com headlines 2011

The latter is mainly for observers with refractors and Cassegrain telescopes, which reverse the moon's image left to right.

Yahoo! News: Business - Opinion 2012

[20] On comparing the Cassegrain telescopes with a small convex mirror, to the Gregorian telescopes with a small concave mirror, Captain Kater found that the former, in which the luminous rays do not cross each other before falling on the small mirror, possess, as to intensity, a marked advantage over the latter, in which this crossing takes place.

Biographies of Distinguished Scientific Men Baden Powell 1819