Lockyer, Norman, Sir, 1836-1920, Seabroke, G. M. (George Mitchell), 1848-1918 · London, Macmillan and co. · leaf 178
CHAP. XII.] THE MODERN TELESCOPE. 155 ciently bright to form diffraction rings, appearing of thesame size. It, therefore, happens that as the aperturesof telescopes increase, and with them the amount oflight, (the eyepieces being sufficiently powerful to cause … Fig. 80.—The same region, as seen through a large telescope. all the light to enter the eye,) smaller and smaller starsbecome visible, while the larger stars appear to getbrighter and brighter without increasing in size, theimage of the brightest star with the highest power, ifwe neglect rays and…
Astronomy · Telescopes
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