Рефракторен телескоп [Technology Category:
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“Рефракторният телескоп е оптичен телескоп, който използва комбинация от лещи, за да пречупва светлината. За разлика от рефракторните, рефлекторните телескопи използват не лещи, а огледала. Макар големите рефракторни телескопи да са много популярни през втората половина на 19 век, за изследванията през следващите години се използват рефклетнорни такива, тъй като имат по-големи апертури. Увеличението на рефрактора се изчислява като се раздели фокусното разстояние на обектива на това на окуляра. …” (Wikipedia) (Wikipedia translated)
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