Sky science
Reflecting Telescope
Direct answer
Reflecting Telescope: A Reflecting Telescope forms an image mainly with a curved primary mirror rather than a front objective lens.
It is a telescope whose primary optic is a mirror.
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At a glance
- Found in
- Astronomy & Skywatching
- Related
- Secondary Mirror, Refracting Telescope, Catadioptric Telescope, Radio Telescope
It is a telescope whose primary optic is a mirror.
A scientific orientation to scale, light, or motion; the article supplies the precise definition.
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The story behind Reflecting Telescope
Newton’s reflector demonstrated a practical alternative to the chromatic problems of early refractors.
A one-minute story
The Wandering Stars
How the moving planets were watched, named and found, and what a transit is.
Why Reflecting Telescope matters
Reflectors scale to large apertures without primary-lens chromatic aberration.
How to read Reflecting Telescope
Account for collimation, obstruction, coating condition, and thermal control.
Reflecting Telescope in practice: an example
A Dobsonian-mounted Newtonian offers substantial aperture with simple manual pointing.
Where readings of Reflecting Telescope go wrong
A common error is to direct an unfiltered reflector at the Sun; its focus concentrates dangerous energy.
Sources and editorial method
Research references used for this entry include:
- European Southern Observatory: Technology for Telescopes - Observatory reference for aperture, angular resolution, atmospheric seeing, mirrors, and telescope technology.
- NASA Science: Eclipse Viewing Safety - Official solar-viewing guidance for eyes, cameras, binoculars, and telescopes.
- Source
- The Great Almanac Dictionary
- Category
- Astronomy & Skywatching
- Last updated
- 2026-09-26
Explore mirror-based telescopes
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Common questions
What is a Reflecting Telescope?
A Reflecting Telescope forms an image mainly with a curved primary mirror rather than a front objective lens.
What do people get wrong about a Reflecting Telescope?
A common error is to direct an unfiltered reflector at the Sun; its focus concentrates dangerous energy.
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