Naval Observatory 40-Inch

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  40-Inch Primary

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  40-Inch Specifications

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  [Incl memo HWB to CARSO File]

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  Barlow Lens for 40-Inch

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  40-Inch Telescope Hartmann Tests

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  [Incl 3 glass plates]

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  "The Optical Design of the 40-Inch and of the Irenee DuPont Telescopes of the Las Campanas Observatory," by Ira S. Bowen and Arthur H. Vaughan

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  Color Aberration --100 and 40-Inch Telescopes

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