Drawings, sections through axis and telescope by [T Bradley]
Reference number: PT/73/12/16
Date: 1826
Description
Plate 18, figures 8-9 showing sections through the transverse axis of South's transit and a section through the axis of the telescope itself. Inscribed with publication, plate details, and a scale. The published version of this plate is in portrait orientation, with figure 8 above figure 9. Not signed. Royal Society stamp verso.
Subject: Astronomy
Published in Philosophical Transactions as part of paper titled 'On the discordances between the sun's observed and computed right ascensions, as determined at the Blackman-street Observatory, in the years 1821 and 1822; with experiments to show that they did not originate in instrumental derangement. Also a description of the seven-feet transit with which the observations were procured, and upon which the experiments were made' by James South.
Read to the Royal Society on 8 June 1826.
- Reference number
- PT/73/12/16
- Earliest possible date
- 1826
- Physical description
- Ink and ink wash on paper
- Page extent
- 1 page
- Format
- Drawing
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Citation
James South, Drawings, sections through axis and telescope by [T Bradley], 1826, PT/73/12/16, The Royal Society Archives, London, https://makingscience.royalsociety.org/items/pt_73_12_16/drawings-sections-through-axis-and-telescope-by-t-bradley, accessed on 07 December 2025
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Related Publications
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XXVIII. On the discordances between the sun's observed and computed right ascensions, as determined at the Blackman-street Observatory, in the years 1821 and 1822; with experiments to show that they did not originate in instrumental derangement. Also a description of the seven-feet transit with which the observations were procured, and upon which the experiments were made External link, opens in new tab.
Author: James South
Date: 31st December 1826
DOI: 10.1098/rstl.1826.0032
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On the discordances between the sun’s observed and computed right ascensions, as determined at the blackman-street observatory, in the years 1821 and 1822; with experiments to show that they did not originate in instrumental derangement. Also a description of the seven-feet transit with which the observations were procured, and upon which the experiments were made External link, opens in new tab.
Date: 31st December 1833
DOI: 10.1098/rspl.1815.0300
Related Records
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Paper, 'On the discordances between the sun's observed and computed right ascensions as determined at the Blackman Street Observatory, in the years 1821 and 1822; experiments to shew that they do not originate in instrumental derangement; also a description of a seven-feet transit with which the observations were procured, and upon which the experiments were made' by James South
Creator: James South Reference number: PT/18/14
Hierarchy
This item is part of:
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Illustrations produced for the Philosophical Transactions of the Royal Society, 1807-1833
1807-1833 Reference number: PT/73 -
Illustrations produced for the Philosophical Transactions of the Royal Society, volume 116
1825-1826 Reference number: PT/73/12
Related Fellows
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James South
Author
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Philosophical Transactions
The 'Philosophical Transactions' collection comprises manuscript versions of papers published in The Philosophical Transactions of the Royal Society, the world’s first and longest continuously running journal dedicated to science.
Dates: 1802 - 1865
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