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secondary smaller mirror in a reflecting telescope that redirects light from the larger primary mirror towards the eye of the observer or light-sensitive scientific instruments, peegelteleskoobi optikasüsteemi element, peapeeglist väiksem
sekundaarpeegel . Kosmoseteaduse ja -tehnoloogia terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//kth/sekundaarpeegel/1/est (13.07.2026)
