The photochronograph and its applications.
Contributors: Hagen, Johann G., 1847-1930.; Algué, José, 1856-1923.; Fargis, George Aloysius, 1854-; Hedrick, John T.
Publisher: Stormont & Jackson, printers
Published: 1894
Place of publication: Washington, D.C
Language: eng
Number of pages: 160
Subjects: Photochronograph
Notes: At head of title: Georgetown college observatory.
Contains six papers, each with special t.-p.
Preface signed: J. G. Hagen, S.J.
Table of contents: title: I. The photochronograph and its application to star transits, by G. A. Fargis. 1891.; title: II. The photochronograph applied to determinations of latitude, by G. A. Fargis. 1892.; title: III. The reflecting zenith telescope, by José Algué. 1893.; title: IV. The photographic zenith telescope, by G. A. Fargis. 1894.; title: V. The photochronograph applied to measures of double stars and planets, by G. A. Fargis. 1894.; title: VI. Suggestions regarding the application of the photochronograph, by J. T. Hedrick. 1894.