Photo, Print, Drawing Dom Pedro II Observatory, Saint Thomas Island, Danish Possession in the Antilles: Overview of the Observatory from the Northeast with the Three Pavilions and the Collimators of the Meridian Circle Telescope. Observatorio D. Pedro II, Ilha de S. Thomaz, possessao dinamarqueza nas Antilhas: vista geral do observatorio tomada do Nordeste e comprehendendo os tres pavilhoes e os collinadores da luneta meridiana
About this Item
Title
- Dom Pedro II Observatory, Saint Thomas Island, Danish Possession in the Antilles: Overview of the Observatory from the Northeast with the Three Pavilions and the Collimators of the Meridian Circle Telescope.
Other Title
- Observatorio D. Pedro II, Ilha de S. Thomaz, possessao dinamarqueza nas Antilhas: vista geral do observatorio tomada do Nordeste e comprehendendo os tres pavilhoes e os collinadores da luneta meridiana
Summary
- This photograph is contained in an album that commemorates the participation of Brazil in the international effort to track the transit of Venus in 1882. This involved the establishment by the Imperial Observatory of an observatory, named after Emperor Dom Pedro II (1825-91), on the island of Saint Thomas in the Danish West Indies (present-day U.S. Virgin Islands). The transit of Venus is a rare astronomical event that occurs when Venus passes between the Earth and the sun, becoming visible in daylight against the solar disk. The transits occur in eight-year pairs at intervals of more than a century. Since the 17th century, astronomers had been especially interested in these transits, as they offered the chance, using multiple observations and complex mathematical calculations, to determine the distance between the Earth and the sun (the Astronomical Unit). There thus was great scientific as well as public interest in the transits of 1874 and 1882. The album is part of the Thereza Christina Maria Collection at the National Library of Brazil. Composed of 21,742 photos assembled by Emperor Pedro II throughout his life and donated by him to the national library, the collection covers a wide variety of subjects and documents the achievements of Brazil and Brazilians in the 19th century. The collection, named after Empress Thereza Christina Maria, was inscribed on the UNESCO Memory of the World register in 2003.
Names
- Brazilian Astronomical Commission Creator.
Created / Published
- Virgin Islands : [publisher not identified], [1882 to 1883]
Headings
- - United States of America--U.S. Virgin Islands--Saint Thomas
- - 1882-12-06
- - Antilles, Lesser
- - Astronomical instruments
- - Astronomical observatories
- - Memory of the World
- - Scientific expeditions
- - Telescopes
- - Venus (Planet)--Transit--1882
Notes
- - Title devised, in English, by Library staff.
- - Original resource extent: 1 photograph contained in an album : black and white ; 18.1 x 25.2 centimeters.
- - Original resource at: National Library of Brazil.
- - Content in Portuguese.
- - Description based on data extracted from World Digital Library, which may be extracted from partner institutions.
Medium
- 1 online resource.
Source Collection
- The Brazilian Astronomical Commission: Transit of Venus on December 6, 1882
Digital Id
Library of Congress Control Number
- 2021669530
Online Format
- compressed data
- image