אסטרונאוט הניסוי נחיצות different types of reflector telescopes סטודנט עשן חרפה
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Reflecting Telescope
Telecover Telescope Cover - Telescopes 101: There are three main types of telescope – refractor, reflector, and catadioptric. The most common type of telescopes are called refracting telescopes. This name also covers
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