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Scientific American

February 1, 1940

1 min read

Telescoptics, February 1940

A Monthly Department for the Amateur Telescope Maker

By Albert G. Ingalls

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This article was originally published with the title “Telescoptics” in Scientific American Magazine Vol. 162 No. 2 (February 1940), p. 122
doi:10.1038/scientificamerican0240-122

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