noun
Usage: usually capitalized S
: a photographic astronomical reflecting telescope embodying a Schmidt system so that the curved focal surface is free of significant spherical aberration and coma over a wide angular field
noun
Usage: usually capitalized S
: a photographic astronomical reflecting telescope embodying a Schmidt system so that the curved focal surface is free of significant spherical aberration and coma over a wide angular field
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012