Separating Power of a Telescope

descriptionPublicationkeyboard_double_arrow_right Article 01 Sep 1910 English Publisher:Springer Science and Business Media LLCJournal:Nature, volume 84, pages 266-267 (issn: 0028-0836, eissn: 1476-4687,

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Authors: Lewis, T.;

doi: 10.1038/084266e0

Separating Power of a Telescope

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Abstract

THE questions proposed cannot be answered quite so definitely as Mr. Scholes would appear to think. To begin, we must have a clear idea of what is meant by the separating power of a telescope. Put in a theoretical form, it means: Given two points of light (stars) a certain angular distance apart, what is the size objective which will just give two distinct images in the focus? For practical purposes, this is answered by the formula

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