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Glossary term: Telescópio Refletor

Description: Em um telescópio refletor ou telescópio de espelho, o principal elemento óptico é um espelho, o "espelho primário", que coleta a luz incidente. Os telescópios de espelho geralmente são caracterizados pelo diâmetro do espelho primário, que varia de 10 centímetros, no caso de telescópios amadores menores, a oito metros, no caso dos maiores espelhos sólidos usados em telescópios profissionais. Áreas de coleta ainda maiores podem ser obtidas pela combinação de vários segmentos de espelho, que agem de forma semelhante à de um espelho sólido maior. Há vários tipos de telescópios de espelho. Por exemplo, em um telescópio newtoniano, a luz proveniente do espelho primário é refletida lateralmente por um espelho menor e plano para uma ocular ou uma câmera. Em um telescópio Cassegrain, um espelho secundário menor e convexo reflete a luz de volta por meio de uma abertura no espelho principal.

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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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