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![Cover for Jingquan Cheng · The Principles of Astronomical Telescope Design - Astrophysics and Space Science Library (Paperback Book) [Softcover reprint of hardcover 1st ed. 2009 edition] (2010)](https://imusic.b-cdn.net/images/item/original/859/9781441927859.jpg?jingquan-cheng-2010-the-principles-of-astronomical-telescope-design-astrophysics-and-space-science-library-paperback-book&class=scaled&v=1493836649)