The Royal observatory, Greenwich. A glance at its history and work (1900)
Maunder, E. Walter (Edward Walter), 1851-1928 · London, The Religious tract society · leaf 292
ns. The work was tobe divided between eighteen Observatories of differentnationalities. It was to result in a photographicchart extending to the 14th magnitude, and probablyembracing some forty million stars, and a cataloguemade from measures of the photographs down tothe nth magnitude, which would… … THE CONTROL PENDULUM AND THE BASE OF THETHOMPSON TELESCOPE. 290 THE ROYAL OBSERVATORY inches aperture and n feet focus. At Greenwichthis telescope is mounted equatorially—that is, so asto follow the stars in their courses—and is mountedon the top of the pier that once supported Halleysquadrant. The…
Royal Greenwich Observatory · Astronomy
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