The 'equatorial coude' refracting telescope, Paris Observatory, France - aperture 7.5cm. The tube is 'bent' and light fed to the observer by two mirrors, one in front of the telescope and the other at the 'elbow'. Engraving from A Handbook of Descriptive Astronomy by George F Chambers (Oxford, 1890).
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TOP16003578
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達志影像
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RM
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