Back Diepruimte Afrikaans أجرام السماء العميقة Arabic Objecte de l'espai profund Catalan Hluboký vesmír Czech Deep Sky German Objeto del espacio profundo Spanish Espazio sakoneko objektu Basque دگرهستی‌ها در ژرفای آسمان Persian Syvä taivas Finnish Objet du ciel profond French

Deep-sky object

"Deep sky" redirects here. For the racehorse, see Deep Sky (horse). For the 2023 documentary, see Deep Sky. For the band, see Deepsky.
Several nebulae in the constellation Orion commonly called deep-sky objects

A deep-sky object (DSO) is any astronomical object that is not an individual star or Solar System object (such as Sun, Moon, planet, comet, etc.).[1][2] The classification is used for the most part by amateur astronomers to denote visually observed faint naked eye and telescopic objects such as star clusters, nebulae and galaxies. This distinction is practical and technical, implying a variety of instruments and techniques appropriate to observation, and does not distinguish the nature of the object itself.

  1. ^ Fred Schaaf (1998). 40 Nights to Knowing the Sky: A Night-by-Night Sky-Watching Primer. Henry Holt and Company. p. 113. ISBN 978-0-8050-4668-7.
  2. ^ Ian Ridpath (2001). The Illustrated Encyclopedia of the Universe. Watson-Guptill Publications. p. 273. ISBN 978-0-8230-2512-1.

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