Abstract
FOR some ten years past visitors to the Observatory of Paris have found Dr. Ritchey installed on the top floor, working out his optical ideas. These ideas are the fruit of his long experience in the use and construction of telescopes, first at Yerkes and later at Mount Wilson. They are thus very mature, and unless we are to discard experience altogether, they deserve the most careful consideration.
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References
L'Evolution de lastrophotographie et les grands tlescopes de lavenir (The Development of Astro-photography and the Great Telescopes of the Future). Par G. W. Ritchey . Publié sous les auspices de la Société Astronomique de France. Pp. 36 + 34 planches. (Paris.)
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S., R. The Great Telescopes of the Future1. Nature 125, 169–170 (1930). https://doi.org/10.1038/125169a0
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DOI: https://doi.org/10.1038/125169a0