The geography of the heavens, and class-book of astronomy: accompanied by a celestial atlas (1873)
Burritt, Elijah H. (Elijah Hinsdale), 1794-1838, Mattison, Hiram, 1811-1868, ed, Whitall, Henry, 1819-1887? Celestial planisphere · New York, Sheldon & company · leaf 331
701. This is probably the best instrument m the United Sttatet>.Its object-glass is 15 inches in diameter, with a focal length of22 feet 6 incites. It has eighteen different powers, ranging from103 to 2.000. It was made by Merz & Mahler, of Munich, Ba-varia, and cost $19,S42. Tbo cut shows… … TUB fiEBAi CKA1G TJjlJ£bCUi>J£, W A±\ J..t> w uiclll COJdJdOjM, NJSAB LONDON. 702. This is the largest refracting telescope ever constructedThe object-glass is two feet in diameter, with a focal distance of76 feet. The tube is of heavy sheet iron, and shaped somewhatlike a cigar. It is 13…
Constellations · Stars
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