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Telescopes & Light. History Hans Lippershey Middleburg, Holland –invented the refractor telescope in 1608 Galileo –the first to use a telescope in astronomy. - ppt download
![Draw a schematic diagram of a reflecting telescope (Cassegrain). Write its two advantages over a refracting telescope. Draw a schematic diagram of a reflecting telescope (Cassegrain). Write its two advantages over a refracting telescope.](https://d1hj4to4g9ba46.cloudfront.net/questions/234951_260889_ans.gif)
Draw a schematic diagram of a reflecting telescope (Cassegrain). Write its two advantages over a refracting telescope.
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Reflecting Type Telescope, Chapter 9, Ray Optics And Optical Instruments, Class 12 Physics - YouTube
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