Lockyer, Norman, Sir, 1836-1920, Seabroke, G. M. (George Mitchell), 1848-1918 · London, Macmillan and co. · leaf 450
ghwhich the light has to pass before it comes to the eye.In this combination of telescope and spectroscope wehave what has been called the telespectrosco2:>e; one CHAP. XXIX. THE CHEMISTRY UF THE STARS 427 method of combination is seen in tlie accompanyingdrawing of the spectroscope attached to… … Fig. 192.—The Eyepiece End of the Newall Refractor (of 25 inches aperture),with Spectroscope attached. admit of great dispersion, many prisms are employed,as shown in Fig. 192 ; or the prisms may be made sotall that the light may be sent backwards and for-w^ards many times by means of return…
Astronomy · Telescopes
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