A popular handbook and atlas of astronomy, designed as a complete guide to a knowledge of the heavenly bodies and as an aid to those possessing telescopes (1891)
Peck, William, Sir, 1862-1925 · New York, G. P. Putnam's Sons · leaf 63
Nebulae—Plate 8. … THE SIDEREAL HEAVENS. 29 aid of a small telescope; and also the clusters in Perseus and Gemini. In the constellation of Hercules thereis situated one of the finest clusters in the heavens (see Plate 7). This extremely beautiful object, of aglobular form, is estimated to contain no less than…
Astronomy
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