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Filtering by: Creator Bergmann, Carl A. Series Series 6: Glass Negatives Topic Refracting telescopes

$36-inch refractor, the "Great Lick Refractor": detail, eye end$

$36-inch refractor, the "Great Lick Refractor": view with the floor lowered$

$36-inch refractor, the "Great Lick Refractor": view of the eye-end with the Mills spectrograph attached$

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