Glossary term: Telescopio reflector
Description: En un telescopio reflector, el elemento óptico principal es un espejo, el «espejo primario», que recoge la luz incidente. Los telescopios reflectores suelen caracterizarse por el diámetro del espejo primario, que oscila entre los 10 centímetros de los telescopios amateur más pequeños y los ocho metros de los espejos sólidos más grandes utilizados en los telescopios profesionales. Se pueden obtener superficies colectoras aún mayores combinando varios segmentos de espejo, que actúan entonces de forma similar a la de un espejo macizo de mayor tamaño. Existen varios tipos de telescopios de espejo. Por ejemplo, en un telescopio newtoniano, la luz procedente del espejo primario es reflejada lateralmente por un espejo plano más pequeño hacia un ocular o una cámara. En un telescopio Cassegrain, un espejo secundario más pequeño y convexo refleja la luz hacia atrás a través de una abertura en el espejo principal.
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See this term in other languages
Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher The translation of this term and its definition is still awaiting approval
The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".
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In Other Languages
- Árabe: تلسكوب عاكس
- Alemán: Spiegelteleskop
- Inglés: Reflecting Telescope
- Francés: Télescope à réflexion
- Italiano: Telescopio a riflessione
- Japonés: 反射望遠鏡 (external link)
- Maratí: परावर्ती दूरदर्शी
- Portugués de Brasil: Telescópio Refletor
- Chino simplificado: 反射式望远镜
- Chino tradicional: 反射式望遠鏡
Related Media
Keck Telescopes
Caption: The two Keck telescopes on Mauna Kea on the island of Hawai`i. These two telescopes are reflecting telescopes with primary mirrors 10m across.
Credit: NASA/JPL
credit link
License: PD Public Domain icons
Learning Nights
Caption: Honorable mention in the 2023 IAU OAE Astrophotography Contest, category of Still images taken exclusively with smartphones/mobile devices.
Beneath the sprawling expanse of the night sky over Colombia's Tatacoa Desert, a telescope finds its alignment with the majestic galactic core, while a smartphone captures this cosmic encounter. This snapshot, taken on 9 June 2023 during an astronomy camp, epitomises the accessible beauty of celestial marvels. It showcases the mesmerising grandeur of the night sky, inviting both the casual stargazer and the passionate astronomer alike. The splendour of the Milky Way, elegantly captured through a mobile device, seamlessly bridges the gap between sophisticated equipment and the pure, profound joy of observing the stars.
Credit: Juan Pablo Botero Londoño/IAU OAE (CC BY 4.0)
License: CC-BY-4.0 Creative Commons Reconocimiento 4.0 Internacional (CC BY 4.0) icons



