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