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RGO Archives/RGO 4 contains:
<-- See earlier
142 Observations and calculations
143 Adjustment of quadrant plumb-line
144 Tabular place of Mars
145 Stellar catalogue
146 Observations of transit of Venus
147 Observations of Flamsteed and Bradley
148 Star catalogues
149 Letters from Maskelyne to Henry Andrews
150 Journal of voyage to St Helena
151 Transit telescope observations
152 Notes on Harrison's timekeeper
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Papers of Nevil Maskelyne

Title Observations of Flamsteed and Bradley
Reference RGO 4/147
(former reference: A2/417)
Covering Dates circa 1690-circa 1770
Extent and Medium 1 folder
Content and context

Examination of John Flamsteed and James Bradley's observations, primarily by John Howe.

1. Distances from the Pole Star to the Pole based on observations by Tycho Brahe in 1583 and by Flamsteed in 1690, compiled by Howe, 31 May 1708.

2. The precession of the equinox inferred from Flamsteed's 1690 observations, compiled by Howe, 13 December 1770.

3. Apparent right ascension of the star Alpha Aquilae, 1753-1756, and other stars.

4. A star catalogue showing proper motions of the stars.

5. Investigations into measurements made by Tycho Brahe, c. 1583, making allowance for errors, refraction and aberration, computed by Howe, 8 April 1767.

6. Right ascensions of various stars, 1 January 1758.

7. Comparison of Howe's tables of the Sun with Bradley's observations, 1743-1759, and also the motion of the Sun, 1764.

8. Zenith distances cleared of errors from refractions, 1753-1754.

9. Solstitial zenith distance of the Sun, reduced and corrected.

10. Right ascension of the star Alpha Aquilae, 1753-1754, and the proper motions of stars, 1767.

11. Errors in the equation of the Sun caused by Venus.

12. Various notes on other astronomers' observations, with a list of stars with peculiar motions.

13. Differences in star positions between Flamsteed and Bradley's observations.

14. Corrections to Flamsteed's stars; Rømer's star catalogue, 1706 (the Triduum); and observational technique.

15. Errors of Flamsteed's mural quadrant; right ascension of the Sun, 1690; and corrections and verification of previous observations.

16. Chronology of observations performed by Howe and Bradley.

17. 'To find longitude at sea', various methods suggested by Thomas Hazelden of Wapping in a letter to James Hodgson, 28 August 1728.

Further information

Indexed

Index Terms
Flamsteed, John (1646-1719) astronomer
Bradley, James (1692-1762) astronomer
Hodgson, James (1672-1755) mathematician
Römer, Ole Christensen (1644-1710) astronomer
Brahe, Tycho (1546-1601) astronomer and alchemist
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