חליפין אזרחי נהיגה blueprint of a reflective telescope עמית להבטיח טירוף
Choosing a Telescope – MARK THOMPSON
Reflecting telescope - Wikipedia
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Reflecting Telescope: Definition, Optics, Design and Diagram
Draw a schematic ray diagram reflecting telescope showing how rays coming from a distant object are received at eye piece. Write its two important advantages over a refracting telescope.
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