| 31. | Also in 1891, Patrick Alexander acquired an aperture refractor telescope which was erected in Bath.
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| 32. | Also, Patrick offered his telescope-the 8 " refractor-to the War Office.
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| 33. | In the same year a 9-inch Alvan Clark refractor was mounted in the observatory.
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| 34. | In 1873 they built the objective lens for the refractor at the United States Naval Observatory.
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| 35. | An example of the refractor cards differing is a 1996 Kobe Bryant Bowman's Best.
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| 36. | The Atomic Refractor was worth $ 250 when released, and is now worth $ 450.
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| 37. | Greens'Refractor, 1934 to 1978
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| 38. | Although the types of telescopes that amateurs build vary widely, including refractor and the Schmidt Cassegrain.
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| 39. | The refractor alters the spatial characteristics of the wave on one side relative to the other side.
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| 40. | The first telescope installed at the observatory was a 12-inch refractor made by Alvan Clark.
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