Skip to main content

Astronomical clocks -- United States.

 Subject
Subject Source: Library of Congress Subject Headings

Found in 29 Collections and/or Records:

Time Service Clock Comparisons, 1878/1879 Digital

Item — Box 75Identifier: KG11365-6, phaedra1806
Scope and Contents: This series contains astronomical observations, data calculations, and administrative notes from the beginning of Edward Pickering’s tenure as Director of the Harvard College Observatory with the bulk of the materials dating from 1870 to 1905. The notebooks in this series feature early efforts in variable star analysis and meridian circle work, including HCO efforts to contribute zone measurements to contemporary revisions of the Bonn Durchmusterung. Additional records in this series...

Time Service (Clock Errors), 1879 Digital

Item — Box 74Identifier: KG11365-6, phaedra1789
Scope and Contents: This series contains astronomical observations, data calculations, and administrative notes from the beginning of Edward Pickering’s tenure as Director of the Harvard College Observatory with the bulk of the materials dating from 1870 to 1905. The notebooks in this series feature early efforts in variable star analysis and meridian circle work, including HCO efforts to contribute zone measurements to contemporary revisions of the Bonn Durchmusterung. Additional records in this series...

Time Service, Clock Errors and Russian Transit, 1877 Digital

Item — Box 75Identifier: KG11365-6, phaedra1797
Scope and Contents: This series contains astronomical observations, data calculations, and administrative notes from the beginning of Edward Pickering’s tenure as Director of the Harvard College Observatory with the bulk of the materials dating from 1870 to 1905. The notebooks in this series feature early efforts in variable star analysis and meridian circle work, including HCO efforts to contribute zone measurements to contemporary revisions of the Bonn Durchmusterung. Additional records in this series...

Time Service, Clock Errors and Russian Transit, 1877 Digital

Item — Box 75Identifier: KG11365-6, phaedra1798
Scope and Contents: This series contains astronomical observations, data calculations, and administrative notes from the beginning of Edward Pickering’s tenure as Director of the Harvard College Observatory with the bulk of the materials dating from 1870 to 1905. The notebooks in this series feature early efforts in variable star analysis and meridian circle work, including HCO efforts to contribute zone measurements to contemporary revisions of the Bonn Durchmusterung. Additional records in this series...