The 200-inch-diameter objective mirror of the reflecting
The 200-inch-diameter objective mirror of the reflecting telescope at the Mt. Palomar Observatory has a focal length of 17 . Part A The -number of a mirror is defined exactly the same as the -number of a lens. What is the -number of this mirror?
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the 200-inch-diameter objective mirror of the reflecting telescope at the mt palomar observatory has a focal length of
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