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Observing equipment

Dobsonian Telescope

A large reflecting telescope on a simple, stable, inexpensive alt-azimuth mount — the design that put big apertures within reach of ordinary observers. It offers more light-gathering power per unit cost than anything else, and is the classic instrument for deep-sky observing.

Highlights

  • The most aperture for the money

Across public astronomy

Knowledge connections

Sources

The primary and reference sources this topic draws on.

  • NASANational Aeronautics and Space Administration

    Mission data, planetary science, space telescopes, and public-domain imagery.

    Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.