Identifier: highschoolastro00matt (find matches)
Title: A high-school astronomy: in which the descriptive, physical, and practical are combined ..
Year: 1859 (1850s)
Authors: Mattison, Hiram, 1811-1868
Subjects: Astronomy
Publisher: New York, Mason brothers
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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ing abroad, and at far less ex-pense. The following is a list of telescopes manufactured by Mr. Fitz, with the pricesattached. PRICES OF FITZS TELESCOPES, EQUAT0RIALLY MOUNTED, ETC. f Focal length. Object-glass. New stylemounting. Old stylemounting-. Difference of cost. Oft. 8i inches. $1,400 $2,300 $900 11 8^ 2,220 10 ft. 8 inch. 8 1,500 2,000 850 8 ki 6; 700 1,200 500 7 5 400 750 350 7 4i 300 500 200 5 * 4 225 400 175 He will furnish a very good telescope of three inches aperture for $120, equatoriallymounted, with eye-pieces, &c. The size priced at $225 is equal to that at Yale College.A good revolving dome for an observatory building can be built for $100. This note is inserted exclusively for the benefit of institutions using the work, andwithout any request or remuneration from Mr. Fitz. Orders or letters of inquiry maybe addressed to Henry Fitz, Jun., 237 Third-street, New York. 522. Where tele* * pes formerly made? Where and by whom now, in thiacountry ? 10* 226 ASTRONOMY.
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RUTHERFORD S EQUATORIAL REFRACTOR. 523. The above cut represents an equatorial telescopemanufactured by Mr. Henry Fitz, of New York—the oneused by the author in making most of his observations.Its object-glass is six inches in diameter, and its focallength eight feet. A is the declination circle, and B the circle of right ascension. The two sticks hang-ing from these circles are used to move the instrument in right ascension or declination,while the observer is at the eye-piece. The Finder is seen attached to the lower end of the large instrument. It takes ina larger field of view in the heavens than the latter, and enables the observer to lookup objects with facility, and bring them into the field of the larger instrument. This instrument has no clockwork attached. It rests upon a pillar of heavy mason-work, the top of which may be seen in the cut; and in the hands of its present owner,Lewis M. Rutherford, Esq., has already rendered very efficient service. 5j . ., r. Rutherfords te

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