25 inch F2.6 Telescope
Figure 1 from Active Optics for a 16-Meter Advanced Technology ...
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Jupiter: The Ultimate Observing Guide | Sky & Telescope - Sky ...
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Sketch of a polarized ray path through a Cassegrain telescope ...
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ClarkVision: Visual Astronomy: M51 and Telescope Aperture
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Galileo and the Telescope
25 inch F2.6 Telescope
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