Article ID: CBB988844649

A tale of three telescopes: the John A. Brashear Company and its 46-cm objective (2019)

unapi

This is a history of a 46-cm objective lens used in three refracting telescopes. It was designed and figured by Charles S. Hastings and James B. McDowell respectively, employed by the John A. Brashear Company. In the past, its fabrication had been attributed to John A. Brashear alone. The lens, mounted in two different telescopes, had two periods of scientific use in the United States during the nineteenth and twentieth centuries, with Percival Lowell (1894-1895) and the Flower Observatory (1896-1954), respectively. On 1 July 2019, the lens began a third use in New Zealand.

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Authors & Contributors
Orchiston, Wayne
Proverbio, Edoardo
Kärnfelt, Johan
Bolton, Catherine
Nordenmark, Nils Viktor Emanuel
Ago, Renata
Journals
Journal of Astronomical History and Heritage
Physis: Rivista Internazionale di Storia della Scienza
Galilæana: Journal of Galilean Studies
Journal for the History of Astronomy
Publishers
Antique Telescope Society
Louwman Collection of Historic Telescopes
Iowa State University
Verlag Harri Deutsch
Science History Publications
Peter Lang
Concepts
Telescopes
Instruments, astronomical
Astronomy
Lenses
Scientific apparatus and instruments
Astronomical observatories
People
Galilei, Galileo
Dollond, John
Boscovich, Ruggiero Giuseppe
Joseph Thomas Ward (25 January 1862 – 4 January 1927)
Nordenmark, Nils Viktor Emanuel
Wargentin, Pehr Wilhelm
Time Periods
17th century
20th century
18th century
19th century
20th century, early
Modern
Places
Italy
New Zealand
Stockholm (Sweden)
Melbourne (Victoria, Australia)
United States
Sweden
Institutions
Stockholm Observatory
Royal Swedish Academy of Sciences
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