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RGO Archives/RGO 3/43 contains:
1 Notes on Bradley's manuscripts
2 Quadrant observations
3 Deductions from Bliss and Green's observations
4 Observations of eclipses
5 Observations and calculations
6 Papers on comets
7 Early computations
8 Letters to Bradley
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Papers of James Bradley and Nathaniel Bliss

Title Observations and calculations
Reference RGO 3/43/5
Covering Dates circa 1742–1757
Extent and Medium 61 folios
Content and context

Observations and calculations of eclipses.

1. Mathematical equation to find the relative position of the Sun and Moon, with sketches and calculations.

2. Rule and equation concerning the Sun's declination.

3. Observation of an eclipse, 14 July 1748, and calculations relating to that observation.

4. Adjustments to the line of collimation, 1745, giving great detail of the procedure employed.

5. Improvements in illuminating the wires of the quadrant and transit telescopes by Bradley, together with other general alterations, c. 1742.

6. Invitation to attend the Royal Society, 20 June 1757, with calculations on the reverse.

7. Calculations and observations made in establishing distances between the meridians of Sherborne and Oxford from Greenwich, 6 June 1744.

8. Observations of Jupiter and Mercury, 30 October 1744.

9. Observations of the Pole Star, 1745-1746.

10. Observations of Jupiter and Mars made at Oxford, 21 May 1743.

11. Column of monthly figures, 1744-1748, of unknown purpose.

12. Column of figures for 'The Difference in time for 13 1/3 in Azimuth', undated.

13. Tables for reducing 96/90 of quadrant to degrees, 1750-1755.

14. Transit of zenith observations southwards, 1751-1752.

15. Rough calculations.

16. Computation of the Sun's error in right ascension, September 1749.

17. Transit observations, 1754.

18. Lunar observations, 9 October 1747.

19. North polar distances, 1754.

20. Transit observations, 1752.

21. Computation of the Sun's passage for transit observations.

22. Part of a letter from Francis Rowden concerning the building of an observatory, with calculations.

22. Transit observations, 1743-1746, to establish the zenith.

23. Bill for food, 1743-1744.

24. Table of stars passing through threads of the transit instrument, undated.

25. Quadrant observations, 1743.

26. Measurements of the Sun by clocks, 1743-1744.

27. Quadrant observations, 1743-1745.

28. Tables relating to the zenith, 1743.

29. Observations of stars, 1744-1748, with irregular daily intervals between recorded observations.

30. Table of zenith distances and errors, 1742.

31. Mean differences in right ascension between Orion and Aquila, 1 January 1743.

32. Positions of major stars, 1743.

33. Observations of stars at regular daily intervals, 1743-1748.

Further information

Indexed

Index Terms
Oxford
Sherborne
Royal Society
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