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large main mirror in a reflecting telescope that collects and focuses incoming light on a smaller secondary mirror, peegelteleskoobi suur peamine peegel, mis kogub valgust ja fokuseerib selle väiksemale sekundaarpeeglile
peapeegel . Kosmoseteaduse ja -tehnoloogia terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//kth/peapeegel/1/est (12.07.2026)
