Comparison of positions of stars between 49⁰50' and 55⁰10' of north declination in 1855.0 and observed with the meridian circle during the years 1870 to 1884
Subtitle: under the direction of Joseph Winlock and Edward C. Pickering, successive directors of the Observatory
By: By William A. Rogers ... Printed from funds resulting from the will of Josiah Quincy, Jun. ...
Series: Annals of the Astronomical Observatory of Harvard College -- v. 25
Publisher: Printed at the Mail Office
Published: 1893
Place of publication: Waterville, Me
Language: eng
Number of pages: 382
Subjects: Stars; Observations; Proper motion