ESA Science & Technology - The Yerkes 40 inch refractor telescope - 1897
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Refracting telescope - Wikipedia
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Amazon.com: Refracting Telescope 1888 Nthe Great Refracting Telescope Built By Alvan Clark & Sons For The Lick Observatory On Mount Hamilton California In 1888 Used By Edward Bernard Line Engraving Late 19Th
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Large Refracting Telescope Canvas Print / Canvas Art by Universal History Archive/uig - Fine Art America
:max_bytes(150000):strip_icc()/Lipperhey_portrait-58b848b05f9b5880809d1797.jpg "Hans Lippershey: Telescope and Microscope Inventor")
Hans Lippershey: Telescope and Microscope Inventor
Observers Using A Refracting Telescope Photograph by Universal History Archive/uig - Pixels
Math 309-Refracting Teleschope-by May Wong 76956994
Astronomy: a large refracting telescope, in a specially constructed observatory. Wood engraving, 1881. | Wellcome Collection
Equatorial Coude' Refracting Telescope Wood Print by Universal History Archive/uig - Fine Art America
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Reflecting Telescopes
Math 309-Refracting Teleschope-by May Wong 76956994
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Wisconsin 101
Refracting telescope - Wikipedia
Museo Galileo Galileo National Telescope History of the telescope Refracting telescope, science, wood, scientist, metal png | PNGWing
Long focal length refracting telescope, 1728. The lenses for this instrument were by Francesco Campani, Italian lens maker of Bologna. From 'Hesperi et Phosphori nova Phenomena' by Francesco Bianchini. (Rome, 1728). Engraving
