Reference Code: GBR/0012/MS Add. 8726/D.41
Scope and Contents
Contains: letter from Bernard Pagel, Royal Greenwich Observatory Archive to E.H. Linfoot, the Observatories, Madingley Road Cambridge, about the design of a Cassegrain spectrograph for the Isaac Newton Telescope, 5 May 1964; reprint of a paper by Herbert Dingle from The Bulletin of the Institute of Physics, pp. 314-316, December 1968 annotated [by Linfoot?] with an inserted note containing further calculations; an undated note on Ritchey Chrétien telescopes, containing a list of observatories...
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