zmcollins

1899 Musson

A sketch of the Collins brothers' "Monoplane Achromatic Telescope", from Musson in Knowledge 1900 November 1, 252 (star on the right added for clarity)

 

NEW FORMS OF TELESCOPES.

{Achromatism} and other forms of optical instruments

To the Editor of

            Sir,

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Early Star Party

Published in JRASC, 25, 233 (1931).

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