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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