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RGO Archives contains:
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RGO 41 Cape of Good Hope Publications
RGO 45 Papers of John Guy Porter
RGO 46 Papers of Leslie John Comrie
RGO 47 Anglo-Australian Telescope papers
RGO 48 Papers of the Radcliffe Observatory
RGO 5 Papers of John Pond
RGO 50 RO and RGO Solar Plates
RGO 51 RO and RGO Solar Plates Contact Prints
RGO 52 The Astronomical Almanac
RGO 54 Papers of William Ellis
RGO 55 Papers of the Board of Visitors
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Papers of John Pond

Title Papers of John Pond
Reference GBR/0180/RGO 5
Creator Pond, John
Covering Dates 1801–1836
Extent and Medium 232 volumes, 7 bundles, 4 envelopes + 3 folders; paper
Repository Royal Greenwich Observatory Archives
Content and context

John Pond (1767-1836) was born in London. After attending Maidstone grammar school, he received private tuition from the mathematician William Wales. He entered Trinity College, Cambridge, in 1784 to study chemistry, but was forced by ill health to leave before he could graduate, and embarked on an extended tour of Mediterranean countries. He returned to England in 1798, and established a Troughton altazimuth telescope at Westbury in Somerset. Using observations made at Westbury, he prepared a paper for the Royal Society which demonstrated a deterioration in John Bird's Greenwich quadrant. He was made a fellow of the Society in 1807, and settled in London, where he became involved in the construction of astronomical instruments.

Pond succeeded Nevil Maskelyne as Astronomer Royal in February 1811. He instigated the replacement of the Observatory's old, worn or obsolete instruments, and oversaw the introduction of Edward Troughton and Thomas Jones' mural circles. He introduced improved observational methods and systematised the way in which observations were reduced, instituting the computation ledgers. During his time in office, Pond laid down the principles that provided the basis for the Observatory's operations during the rest of the nineteenth century. The scope of his work expanded after 1820, when the Admiralty assumed responsibility for the Observatory from the Board of Ordnance. Much of the new work related to the testing of marine chronometers for the Royal Navy, which the Admiralty insisted should be carried out at the Observatory.

Pond was a founding member of the Astronomical Society (later the Royal Astronomical Society), established in 1820. During his tenure as Astronomer Royal, he contributed many papers to the R.A.S. and the Royal Society. Following the installation of the Troughton circle at Greenwich, he began work on a catalogue of the north polar distances of 84 principal stars, which he presented to the Royal Society in July 1813. His other works include pieces on the proper motions of stars and stellar parallax, and a catalogue of 1,113 stars, published in 1833. Pond retired as Astronomer Royal in 1835, and died on 7 September 1836.

The collection contains a complete set of astronomical observation ledgers, with clock error notes, computation ledgers, star catalogues, weather records and correspondence. There are observations of comets, including measurements taken of Encke's Comet, 1828, and Halley's Comet, 1835, and observations of rockets, made with Sir James South in 1831. The papers include Pond's measurements for his work on the proper motions of stars, stellar parallax and other subjects, as well as substantial correspondence on chronometers and their mean daily rating, and on the history of Troughton and Jones' mural circles. There is also material on important topics and events, such as the transfer of responsibility for the Royal Observatory from the Board of Ordnance to the Admiralty, 1820; the disbanding of the Board of Longitude, 1828; the inauguration of the Greenwich time ball, 1833; and the establishment of a separate office to oversee the work of the 'Nautical Almanac', c. 1832.

Most of the papers became part of the Observatory's archives following the death of John Pond. RGO 5/229-240 and 241-243 were transferred from the papers of G.B. Airy in the archives, 13 January and 6 February 1984 respectively.

Access and Use

Please cite as Royal Greenwich Observatory Archives, Papers of John Pond, RGO 5

Further information

A word-processed handlist is available in the Manuscripts Reading Room. Indexed

This description was created by Robert Steiner, Department of Manuscripts and University Archives.

Index Terms
Pond, John (1767-1836) astronomer
RGO Archives/RGO 5 contains:
1 Observations and catalogue comparisons. Observations; comparisons between working and printed catalogues of observations, including a sketch of (apparently) the shadow cone of a planet and observations for adjustments.
1 volume.
1826–1833
2 Transit telescope levels. Transit telescope levels and notes on errors in calibration.
1 volume.
1831–1835
3 Intervals of transit telescope wires.
1 volume.
1826–1830
4 Observations of transits. Complete transit observations for the years 1817 and 1818, including phenomena of the Jovian satellites; Edward Troughton's corrections to the eyepiece of the transit telescope; adjustments and corrections to the transit clock; and an eclipse of the Sun, 4 May 1818.
2 bundles.
1817–1818
5 Observations of transits. Original transit observations, January-December 1819, with reversal of the axis of the transit telescope; adjustments to the transit telescope; phenomena of the Jovian satellites viewed using the 46 inch achromatic telescope; observation of meteors, 22-24, 27 and 29 August 1819; and a note that observations were interrupted by work on the Observatory, 28 October-17 November 1819.
1 volume.
1819
6 Observations of transits. Original transit observations, January-December 1820, with adjustments to the transit telescope and transit clock; reversal of the axis of the transit telescope; the eclipse of the Moon, 29 March 1820; and phenomena of the Jovian satellites viewed using the 46 inch achromatic telescope.
1 volume.
1820
7 Observations of transits. Original transits observations, January-September 1821, with notes on the reversal of the axis of the transit telescope; adjustments to the transit telescope; phenomena of the Jovian satellites; and the replacement of the transit clock with a new one made by Messrs Molyneux and Cope, 10 September 1821.
1 volume.
1821
8 Observations of transits. Original transit observations, 12 September 1821 - 24 June 1826, with phenomena of the Jovian satellites; adjustments to the transit clock and transit instrument; replacement of broken micrometer wires; eclipses of the Moon, 5 February 1822, 2 August 1822 and 10 July 1824; 'Observed Capt. Hatiers' light apparently about the size of the wire to the west of the meridian mark'; the pivot of the transit instrument repaired by Edward Troughton; meridian marks at Chingford and Blackwall; occultation of Saturn by the Moon; and occultations of Uranus by the Moon.
1 volume.
1821–1826
9 Observations of transits. Original transit observations, 24 June 1826 - 6 September 1829, with adjustments to the transit instrument; adjustments and repairs by William Hardy to the transit clock; meridian marks at Chingford and Blackwall; phenomena of the Jovian satellites (observed with the 46 inch achromatic telescope and 5 inch equatorial telescope); eclipse of the Moon, 28 November 1826; occultations of various stars observed with the 46 inch telescope; 'Experiments made to find if an error of collimation existed on the Transit Instrument'; and a meteor, 13 November 1828.
1 volume.
1826–1829
10 Observations of transits. Original transit observations, 6 September 1829 - 30 September 1830, with occultations of various stars observed with the 46 inch achromatic, 30 inch achromatic and 5 inch equatorial telescopes; adjustments to the transit instrument; meridian marks at Chingford and Blackwall; and repairs to the transit clock by E.J. Dent.
1 volume.
1829–1830
11 Observations of transits. Original transit observations, 2 October 1830 - 26 June 1831, with adjustments to the transit instrument; occultations of various stars viewed from the equatorial telescope in the East Dome; phenomena of the Jovian satellites; reference to the Chingford and Blackwall meridian marks; and attempted observations of Mercury and Saturn.
1 volume.
1830–1831
12 Observations of transits. Original transit observations, 1 July 1831 - 5 May 1832, with adjustments to the transit instrument; adjustments and corrections to the transit clock; phenomena of the Jovian satellites; occultations of various stars; attempted observations of Mercury, Jupiter, Uranus, Ceres and Pallas; and the meridian marks at Chingford and Blackwall.
1 volume.
1831–1832
13 Observations of transits. Original transit observations, 6 June 1832 - 10 September 1833, with adjustments to, reversal of, and repairs to the transit instrument involving Messrs Troughton and Simms; adjustment of the transit clock; meridian marks at Chingford and Blackwall; and observations of Saturn's rings.
1 volume.
1832–1833
14 Observations of transits. Original transit observations, 1 October 1833 - 26 February 1834, with adjustments to the transit instrument; lunar observations; and repositioning of the meridian marks, 25 October 1833.
1 volume.
1833–1834
15 Observations of transits. Original transit observations, 27 February 1834 - 27 September 1835, with adjustments to the transit instrument; adjustments to the transit clock; repairs to the transit clock by E.J. Dent; the meridian marks at Blackwall and Chingford; and the temporary meridian mark, 27 February 1834.
1 volume.
1834–1835
16 Observations of transits. Copy of transit observations, January 1812 - December 1816, with adjustments by Edward Troughton to the transit telescope and transit clock; phenomena of the Jovian satellites; a description of the meridian mark; reversal of the axis of the transit telescope; occultations of various stars; a total eclipse of the Moon, 9 June 1816; and a meteor, 25 October 1816. Pages of records for the year 1814 have been removed from the volume.
1 volume.
circa 1812-circa 1816
17 Observations of transits. Copy of transit observations, 15 June 1812 - 22 February 1814, with notes on deviations and adjustments and on faults in the instruments, including the mural circle. There is also errata for the observations of the years 1825, 1828 and 1829.
1 volume.
circa 1812-circa 1829
18 Clock errors and measurements. Investigation of clock errors for the Sun, Moon and planets; transit and mural circle measurements.
1 volume.
1812–1816
19 Clock errors and right ascension. Investigation of clock errors for the Sun, Moon and planets; right ascension with the new transit telescope.
1 volume.
1816–1820
20 Clock errors. Investigation of clock errors and their application to the Sun, Moon and planets.
1 volume.
1820–1823
21 Clock errors. Investigation of clock errors, with notes on the clock running down and adjustments to the transit telescope.
1 volume.
1824–1826
22 Clock errors and mean right ascension. Investigation of clock errors and their application to the Sun, Moon, planets and stars; deduction of the mean right ascensions of stars.
1 volume.
1827–1830
23 Clock errors and mean right ascension. Investigation of clock errors and their application to the Sun, Moon, planets and stars; deduction of the mean right ascensions of stars, with a reference to Nevil Maskelyne (folio 1).
1 volume.
1830–1832
24 Clock errors and rates. Computation of clock errors and rates and their application to the Sun, Moon, planets and stars, by Pond and G.B. Airy; notes on the positioning of the instrument.
1 volume.
1833–1835
25 Clock errors and computations. Application of clock errors and computation of apparent and mean right ascensions of stars, July 1816 - June 1823; the first of the star ledgers in right ascension, December 1816 - January 1824.
1 volume.
1816–1824
26 Clock errors and computations. Clock errors and computation of the right ascensions of stars.
1 volume.
1823–1826
27 Clock errors and solar tables. Computation of clock errors, with loose sheets containing the computation of the errors of the solar tables from Greenwich observations.
1 volume.
1825–1829
28 Clock errors and right ascension. Investigation of clock errors and the resulting right ascensions of clock stars; the general application of clock errors.
1 volume.
1831
29 Aberration in right ascension. Elements for aberration in right ascension, north polar distance and declination of 400 stars using Baron von Zach's tables, with the working rule on the front of the volume.
1 volume.
1825
30 Computation of reductions and ascensions. Annual arguments: computation of elements for star reductions in right ascension, with a numerical table for aberration at a maximum in north polar distance.
1 volume.
1825
31 Computation of star corrections. Computations of star corrections in right ascension for circumpolar stars, with a list of circumpolar stars inside the front cover; reductions of Polaris for the year 1811, with reductions of Ursa Minor and Ursa Major; computations of corrections in right ascension for stars and equations for mural circle observations, 1812, with the right ascensions for stars compared with the comet of 1815; and Bradley's catalogue, giving a computation of corrections in right ascension for stars in general, 1816-1822.
1 volume.
circa 1811-circa 1822
32 Observations on right ascensions and longitude. Aberration in right ascension, 1822-1826, with the computation of star corrections in right ascension; some corrections for 1830; 'How to find the Sun's longitude when the aberration of a star is at its negative maximum'; some examples by Zach's tables, with the same example worked by Gauss' method; right ascension of Polaris measured telescopically, with its 'nutation' given by Zach's tables and Gauss' method; position of Polaris in 1812, with notes on the corrections for deviations from the star's true position; and aberration in the right ascension of Polaris, sub-polar.
1 volume.
1812–1830
33 Computation of star corrections. Computations of star corrections in right ascension for Polaris by the formula Aa + Bb + Cc + Dd.
1 volume.
1826–1833
34 Corrections of right ascensions. Corrections of right ascensions in time of 36 principal fixed stars.
1 volume.
1828
35 Computation of star corrections. Computations of star corrections in right ascension for small stars, 6 March 1828 - 2 April 1829, and four equations of the stars in right ascension.
1 volume.
1828–1829
36 Computation of star corrections. Computations of star corrections for small stars in right ascension; four equations of the stars in right ascension.
1 volume.
1829–1830
37 Star reductions for major constellations.
1 volume.
1830
38 Corrections in right ascension. Computations of corrections in right ascension for the principal stars for every tenth day of 1830.
1 volume.
1830
39 Corrections in right ascension. Computations of corrections in right ascension for the principal stars for every tenth day of 1830 (a continuation of RGO 5/38).
1 volume.
1830
40 Log of equation for stars. Log of 'equation a, b, c, d' for stars not included in the Royal Astronomical Society catalogue.
1 volume.
1830
41 Computation of aberration and precession. Computations of aberration and precession in right ascension for nine stars for every tenth day of 1830.
1 volume.
1830
42 Calculation of star corrections. Calculation of star corrections by the formula Aa + Bb + Cc + Dd for 1830; four equations for additional stars in right ascension, with calculations for aberration and precession.
1 volume.
1830
43 Calculation of major stars. Four equations for major stars in right ascension from the catalogue of 1830, with calculations for aberration and precession using the formula Aa + Bb + Cc + Dd.
1 volume.
1831
44 Computation of star corrections. Computations of star corrections in right ascension by the formula Aa + Bb + Cc + Dd, October 1832 - December 1835, including calculations for aberration and precession.
1 volume.
1832–1835
45 Computation of principal stars' corrections. Computations of star corrections for the principal stars in right ascension by the formula Aa + Bb + Cc + Dd, 1 July 1832 - 10 October 1834, including 'odd equations' for 1833 and calculations for aberration and precession.
1 volume.
1832–1834
46 Computation of star corrections. Computations of star corrections in right ascension using the formula Aa + Bb + Cc + Dd. At the back of the volume are calculations for Polaris sub-polar during 1834. There are also calculations for aberration and precession.
1 volume.
1834–1835
47 Stars in right ascension. Stars in right ascension for the years 1816-1821, combined in a few instances with 1822 and others up to 1828.
1 volume.
1816–1828
48 Differences of stars' right ascension. Computations of the difference of the apparent right ascensions of stars, including a series of comparisons of two principal stars to find the difference of right ascension.
1 volume.
1816–1821
49 Star places and right ascensions. Rough comparisons of star places from 1814-1822 and the differences in right ascensions of different stars. There are also miscellaneous computations.
1 volume.
1814–1822
50 Mean right ascension of stars.
1 volume.
1816–1823
51 Right ascensions of stars.
1 volume.
1823–1831
52 Right ascensions of small stars.
1 volume.
1823–1824
53 Right ascensions of small stars.
1 volume.
1828–1829
54 Right ascensions of circumpolar stars. Apparent right ascensions of circumpolar stars and reductions of observations of stars with the transit.
1 volume.
1811–1832
55 Right ascensions of stars. Abstracts of ledgers of the right ascensions of stars, 1817-1829 and 1823-1832.
1 volume.
1817–1832
56 Difference of right ascensions of stars.
1 volume.
1822–1825
57 Computations of transit observations. Reduction of the transit observations of small stars.
1 volume.
1828–1832
58 Small stars in right ascension.
1 volume.
1832–1834
59 Computation of the Moon and planets. Computations of the mean times of observations of the Moon and planets, 24 February 1828 - 24 June 1829.
1 volume.
1828–1829
60 Computation of the Moon and planets. Computations of the mean times of observations of the Moon and planets, 7 July 1829 - 28 December 1832.
1 volume.
1829–1832
61 Computation of the Moon and planets. Computations of the mean times of observations of the Moon and planets, 1 January 1834 - 27 December 1834.
1 volume.
1834
62 Computation of the Moon and planets. Computations of the mean times of observations of the passage of the Moon and planets.
1 volume.
1811–1835
63 Quadrant observations. Quadrant observations of the stars, 14 April 1811 - 11 August 1813.
1 volume.
1811–1813
64 Quadrant observations. Quadrant observations of the stars, 19 May 1822 - 22 October 1822.
1 volume.
1822
65 Observations of north polar distances. North polar distance observations of objects made with the new mural circle, 11 June 1812 - 28 July 1815.
1 volume.
1812–1815
66 Observations with Troughton's circle. A copy of observations made with Edward Troughton's circle, 28 July 1815 - 27 December 1816.
1 volume.
1815–1816
67 Original mural circle observations. Original mural circle observations complete for 1817, except for the last three observations of 18 January, the last eight observations of 7 March, and the first twelve observations of 8 March.
1 bundle.
1817
68 Mural circle observations. Mural circle observations, 1-28 January and March-December 1818.
1 bundle.
1818
69 Observations of north polar distances. Observations of the north polar distances of the principal stars.
1 bundle.
1818
70 Original observations with Troughton's mural circle. Edward Troughton's original mural circle observations of the stars made with two micrometers, with thermometer readings. The volume includes north polar distance and transit measurements made over the meridian wire.
1 volume.
1819
71 Observations with Troughton's mural circle. Edward Troughton's mural circle observations of the stars made with six micrometers; notes on the index error of the circle micrometers giving '2.75 parts horizontal angle by level'.
1 volume.
1819–1825
72 Observations with Troughton's mural circle. Original observations made with Edward Troughton's mural circle and two micrometers, 1 January 1820 - 31 December 1820. There are several references to sidereal time.
1 volume.
1820
73 Observations with Troughton's mural circle. Original observations made with Edward Troughton's mural circle and two micrometers, October 1821. The observations were interrupted by Troughton putting additional braces onto the telescope.
1 volume.
1821
74 Observations with Troughton's mural circle. Observations made with Edward Troughton's mural circle and two micrometers.
1 volume.
1825
75 Observations with Troughton's mural circle. Original observations made with Edward Troughton's mural circle and six micrometers, 8 April 1825 - 31 December 1825.
1 volume.
1825
76 Observations with Troughton's mural circle. Original observations made with Edward Troughton's mural circle and six microscopes, 2 January 1826 - 10 October 1826.
1 volume.
1826
77 Observations with Troughton's mural circle. Original observations made with Edward Troughton's mural circle and six microscopes. There are notes on faulty instruments throughout the volume, with reference to frequent adjustments of the microscopes, broken wires in the eye piece and deviations from correct positions.
1 volume.
1826–1827
78 Observations with Troughton's mural circle. Original observations made with Edward Troughton's mural circle and six microscopes, August 1827 - August 1828, with notes on adjustments to the microscopes and mural telescope.
1 volume.
1827–1828
79 Observations with Troughton's mural circle. Original observations made with Edward Troughton's mural circle and six microscopes, 27 August 1828 - 29 July 1829.
1 volume.
1828–1829
80 Observations with Troughton's mural circle. Original observations made with Edward Troughton's mural circle and six microscopes.
1 volume.
1829–1830
81 Observations with Troughton's mural circle. Original observations made with Edward Troughton's mural circle and six microscopes, 13 November 1830 - 31 August 1831.
1 volume.
1830–1831
82 Observations with Troughton's mural circle. Original observations made with Edward Troughton's mural circle and six microscopes, 2 September 1831 - 17 December 1831.
1 volume.
1831–1832
83 Observations with Troughton's mural circle. Original observations made with Edward Troughton's mural circle and six microscopes, 13 December 1832 - 21 May 1834, with notes on instrument errors.
1 volume.
1832–1834
84 Observations with Troughton's mural circle. Original observations of the stars and planets made with Edward Troughton's mural circle and six microscopes, 21 May 1834 - 31 December 1835, with notes on cloudy conditions and the insufficient definition for observations.
1 volume.
1834–1835
85 Observations with Jones' mural circle. Original observations of the stars made with Thomas Jones' mural circle and six microscopes, 27 January 1825 - 7 April 1825, with notes on errors and adjustments.
1 volume.
1825
86 Observations with Jones' mural circle. Original observations of the stars made with Thomas Jones' mural circle and six microscopes, 8 April - 31 December 1825, with notes on adjustments to instruments.
1 volume.
1825
87 Observations with Jones' mural circle. Original observations of the stars made with Thomas Jones' mural circle and six microscopes, 2 January 1826 - 10 October 1826.
1 volume.
1826
88 Observations with Jones' mural circle. Original observations of the stars made with Thomas Jones' mural circle and six microscopes being adjusted to agree with each other, 2 October 1826 - 26 August 1827.
1 volume.
1826–1827
89 Observations with Jones' mural circle. Original observations of the stars made with Thomas Jones' mural circle and six microscopes, 27 August 1827 - 26 August 1828, with notes on adjustments to the microscopes.
1 volume.
1827–1828
90 Observations with Jones' mural circle. Original observations of the stars made with Thomas Jones' mural circle and six microscopes, 27 August 1828 - 29 July 1829, with notes of adjustments to the circle and the microscopes.
1 volume.
1828
91 Observations with Jones' mural circle. Original observations of the stars made with Thomas Jones' mural circle and six microscopes, 29 July 1829 - 12 November 1830.
1 volume.
1829–1830
92 Observations with Jones' mural circle. Original observations of the stars made with Thomas Jones' mural circle and six microscopes, with notes on clouds and trees interfering with observations.
1 volume.
1830–1831
93 Observations with Jones' mural circle. Original observations of the stars made with Thomas Jones' mural circle and six microscopes, 2 September 1831 - 2 December 1832.
1 volume.
1831–1832
94 Observations with Jones' mural circle. Original observations of the stars with Thomas Jones' mural circle and six microscopes, 13 December 1832 - 16 May 1834, with notes on moving the circle for maintenance.
1 volume.
1832–1834
95 Observations with Jones' mural circle. Original observations of the stars made with Thomas Jones' mural circle, with notes on clouds interfering with observations and on adjustments to instruments.
1 volume.
1834–1835
96 Observations. Observations of various stars, with full records of barometric pressures and temperatures. There is also comparison of observations of north polar distance made with the mural circles and two and six microscopes.
1 volume.
1825
97 Mural circle errors and reductions. Index errors of mural circle observations of stars, 1813; difference of errors in the 1778 tables of Charles Mason on two successive days; and reduction of mural circle observations of stars in the star ledger, 1813.
1 volume.
1813
98 Mural circle index error. Investigation of the index error of Edward Troughton's mural circle, January 1814 - December 1818.
1 volume.
1814–1818
99 Mural circle observations. Observations made with Edward Troughton and Thomas Jones' mural circles and two and six microscopes.
1 volume.
1824–1825
100 Mural circle index errors. Index errors: horizontal points of Edward Troughton and Thomas Jones' mural circles, also giving the altitude of stars, with a separate ledger of the altitude of stars for 1825.
1 volume.
1825
101 Index errors and reductions. Investigation of the Troughton and Jones mural circles and index errors of the two circles, using two and six microscopes, 18 January - 4 May 1825; complete reduction of star observations with the Troughton and Jones mural circles, 14 May - 5 September 1825.
1 volume.
1825
102 Computation of north polar distances. Computations of north polar distances taken from observations made with Edward Troughton and Thomas Jones' mural circles, 5 September 1825 - 4 October 1825.
1 volume.
1825
103 Mural circle index errors. Index errors: horizontal points of Edward Troughton and Thomas Jones' mural circles, also giving the altitudes of stars, 2 January 1828 - 28 February 1828.
1 volume.
1827–1828
104 Mural circle index errors. Index errors: horizontal points of Edward Troughton and Thomas Jones' mural circles, also giving the altitudes of stars, 2 January 1827 - 28 February 1828.
1 volume.
1825–1828
105 Mural circle index errors. Investigation of the index errors of Edward Troughton and Thomas Jones' mural circles, March 1828 - March 1829.
1 volume.
1828–1829
106 Mural circle index errors. Index errors: horizontal points of Edward Troughton and Thomas Jones' mural circles, 3 April 1831 - 31 December 1835.
1 volume.
1831–1835
107 Mural circle index errors. Index errors: adjustments to Edward Troughton and Thomas Jones' mural circles.
1 envelope.
1833
108 Observations of stars. Altitudes of the stars measured with six microscopes, 2 January 1834 - 23 June 1834.
1 volume.
1834
109 Computation of stellar refraction. Computations of refractions of the major stars.
1 volume.
1812–1814
110 Computation of stellar refraction.
1 volume.
1814–1821
111 Computation of stellar refraction. Computations of refractions of the major stars, 1 January 1822 - 10 June 1822.
1 volume.
1822
112 Computation of stellar refraction. Computations of refractions of major stars, 11 June 1822 - 7 September 1823.
1 volume.
1822–1823
113 Computation of stellar refraction.
1 volume.
1816–1824
114 Computation of stellar refraction.
1 volume.
1823–1825
115 Solstitial computations.
1 volume.
1819
116 Computation of stellar refraction. Computations of refractions of stars, 16 February 1826 - 31 December 1827.
1 volume.
1826–1827
117 Computation of stellar refraction. Computations of refractions of stars, January 1828 - October 1828.
1 volume.
1828
118 Computation of stellar refraction. Computations of refractions of stars, 3 October 1828 - 31 May 1831.
1 volume.
1828–1831
119 Calculations of stellar refraction. 'Calculations' of refractions of stars, June 1831 - December 1835.
1 volume.
1831–1835
120 Elements of stellar reduction. Elements of reduction for stars in north polar distance and elements for stars in right ascension, with Maskelyne's printed table 21. There are tables for:. 1. Corrections of the right ascension in time of 59 principal stars for every 10th day of the year. 2. Corrections of the right ascension in time of 59 principal stars to every 10th degree of longitude of the Moon's ascending node. 3. Deviation of stars in north polar distance, common to all the stars. 4. The mean right ascensions and north polar distances of 36 principal fixed stars to the beginning of 1802, with their annual precessions, annual proper motions and annual variations. 5. Mean refraction for every 10 minutes of arc in zenith distance. 6. Deviation of stars in right ascension in time. There are also loose sheets and tables: 1. Formula reminder; 2. Set of working formulae; 3. Barometer-thermometer readings; 4. Solar nutation in north polar distance; 5. Sun's parallax; 6. The Sun's mean diameter; 7. Deviation in north polar distance; 8. Deviation of stars in right ascension.
1 volume.
1823
121 Computation of stellar corrections. Computations of star corrections for north polar distances.
1 volume.
1813–1821
122 Computation of principal stellar corrections. Computations of star corrections for principal stars in north polar distance, 10 April 1817 - 25 February 1819.
1 volume.
1817–1819
123 Computation of stellar corrections. Computations of star corrections in north polar distance, 21 December 1821 - January 1824.
1 volume.
1821–1824
124 Equations for stellar corrections. Four equations for star corrections in north polar distance.
1 volume.
1823–1824
125 Equations for stellar corrections. Four equations for star corrections in north polar distance.
1 volume.
1823–1824
126 Equations for stellar corrections. Four equations for star corrections in north polar distance.
1 volume.
1823–1824
127 Equations for stellar corrections. Four equations for star corrections in north polar distance.
1 volume.
1824
128 Corrections for principal stars. Star corrections in north polar distance for principal stars, with the sum of the four equations to be applied to the north polar distances of the stars.
1 volume.
1825
129 Computation of principal stellar corrections. Computations of star corrections in north polar distance.
1 volume.
1825–1826
130 Computation of principal stellar corrections. Computations of star corrections for the principal stars in north polar distance.
1 volume.
1826
131 Computation of principal stellar corrections. Computations of star corrections of the principal stars in north polar distance for every day of 1826.
1 volume.
1826
132 Computation of stellar corrections. Computations of star corrections in north polar distance.
1 volume.
1826
133 Star corrections in north polar distance. Star corrections in north polar distance for several stars.
1 volume.
1825–1827
134 Computation of stellar corrections. Computations of star corrections in north polar distance for principal stars.
1 volume.
1827
135 Star corrections in north polar distance. Star corrections in north polar distance for principal stars.
1 volume.
1827
136 Equations for stellar corrections. Four equations or star corrections in north polar distance for principal stars (unfinished).
1 volume.
1827
137 Computation of principal stellar corrections. Computations of star corrections in north polar distance for principal stars, with corrections made for aberration, precession and nutation.
1 volume.
1827–1830
138 Equations for stellar corrections. Four equations for star corrections in north polar distance.
1 volume.
1830–1835
139 Computation of north polar distance. Computations of annual variations in north polar distance.
1 volume.
circa 1830
140 Tables of aberration, nutation and precession. Tables of aberration, solar nutation and precession for 45 stars for every 10th day in the bissextile and the three years following.
1 volume.
circa 1830
141 Computation of stellar corrections. Computations of star corrections in north polar distance for some principal stars for every 5th day in the bissextile (1828) and the three years following.
1 volume.
1828–1831
142 Computation of stellar zenith distances. Computations of zenith distances of stars made from quadrant observations.
1 volume.
1811–1812
143 Stellar catalogue of north polar distances. A printed copy of John Pond's 'Catalogue of North Polar Distances of Eighty-Four Principal Fixed Stars' (London, 1813), containing abstracts of results for June 1812-September 1813, with interleaved original manuscript abstracts for 1813-February 1814.
1 volume.
1812–1814
144 Stellar catalogue of north polar distances. A printed copy of John Pond's 'Catalogue of North Polar Distances of Eighty-Four Principal Fixed Stars' (London, 1813), containing abstracts of results for June 1812-September 1813, with interleaved original manuscript abstracts for 1813-February 1814.
1 volume.
1812–1813
145 North polar distances of small stars.
1 volume.
1814–1815
146 North polar distances of small stars. North polar distances of stars, January 1814 - February 1817, with a few north polar distances for small stars in 1817.
1 volume.
1814–1817
147 North polar distances of stars. Observational results of the north polar distances of several stars, apparently collected for an 'examination of parallax'.
1 bundle.
1813–1817
148 Reduction of stellar north polar distances. Reduction of the north polar distances of principal stars.
1 volume.
1814–1820
149 North polar distances of small stars. Computations of the north polar distances of small stars.
1 volume.
1816–1821
150 North polar distances of stars. Computations of the north polar distances of stars.
1 volume.
1817–1822
151 North polar distances of principal stars. Reduction of the north polar distances of principal stars.
1 volume.
1822–1823
152 North polar distances of stars. Computations of the north polar distances of stars.
1 volume.
1822–1823
153 North polar distances of small stars. Computations of the north polar distances of small stars.
1 volume.
1822–1823
154 Reduction of observations. Reduction of sector observations of Gamma Draconis and Eta Ursae Majoris, 1811-1812; reduction of mural circle observations of principal stars in the volume, 1812-1813; and reduction of quadrant observations in the volume, 1824.
1 volume.
1811–1824
155 Altitudes of Polaris and stellar north polar distances. Computations of altitudes of Polaris and of the north polar distances of stars.
1 volume.
1822–1824
156 North polar distances of stars. Computations of the north polar distances of stars.
1 volume.
1822–1825
157 Corrections of star altitudes. Computations of star altitudes corrected for refraction and other errors.
1 volume.
1825
158 Investigation of north polar distances. An investigation of the north polar distances of stars by index errors, using Edward Troughton and Thomas Jones' mural circles and two and six microscopes.
1 volume.
1825
159 Mural circle stellar readings. Readings of Edward Troughton and Thomas Jones' mural circles for principal stars (apparently by refraction).
1 volume.
1825
160 North polar distances of stars. Computations of the north polar distances of stars when sub-polar.
1 volume.
1825
161 Corrected star altitudes. Star altitudes corrected for refraction and other errors.
1 volume.
1826
162 Computation of stellar observations. Computations of circle observations of stars.
1 volume.
1825–1826
163 Reduction of mural circle observations. Reduction of Edward Troughton's mural circle observations of stars.
1 volume.
1825–1826
164 Reduction of mural circle observations. Reduction of mural circle observations of principal stars, recorded in a ledger for part of 1825 and 1826.
1 volume.
1825–1826
165 Reduction of mural circle observations. Reduction of observations of principal stars made with Edward Troughton and Thomas Jones' mural circles, recorded in a ledger for part of 1825 and 1826.
1 volume.
1825–1826
166 North polar distances of stars. Computations of the north polar distances of stars.
1 volume.
1825–1826
167 North polar distances of stars. An abstract of RGO 5/166, computations of the north polar distances of stars.
1 volume.
1825–1826
168 North polar distances of stars. Computations of the north polar distances of stars.
1 volume.
1825–1827
169 North polar distances of small stars. Computations of the north polar distances of small stars.
1 volume.
1825–1827
170 Results of north polar distances. Results for the north polar distances of stars, arranged by decades.
1 volume.
1825–1827
171 Reduction of mural circle observations. Reduction of observations of principal stars made with Edward Troughton and Thomas Jones' mural circles.
1 volume.
1827–1828
172 Reduction of mural circle observations. Reduction of circle observations of principal stars.
1 volume.
1827–1828
173 Reduction of mural circle observations. Reduction of circle observations of principal stars.
1 volume.
1827–1829
174 Results of stellar north polar distances. Results for the north polar distances of stars, arranged by decades.
1 volume.
1827–1828
175 Reduction of mural circle observations. Reduction of observations of principal stars made with Edward Troughton and Thomas Jones' mural circles.
1 volume.
1828–1829
176 North polar distances of small stars. Computations of the north polar distances of small stars.
1 volume.
1828–1829
177 North polar distances of small stars. Computations of the north polar distances of small stars.
1 volume.
1828–1829
178 Reduction of mural circle observations. Reduction of observations of small stars made with Edward Troughton and Thomas Jones' mural circles.
1 volume.
1829–1832
179 North polar distances of principal stars. A ledger on the investigation of north polar distances of principal stars observed with Edward Troughton and Thomas Jones' mural circles.
1 volume.
1829–1835
180 Reduction of mural circle observations. Reduction of observations of stars made with Edward Troughton and Thomas Jones' mural circles, with 'Measures for relating to the Zenith sector copied by Mr Troughton'.
1 volume.
1834–1835
181 Observations of stars when sub-polar. Observations of stars when sub-polar made with Edward Troughton and Thomas Jones' mural circles.
1 volume.
1833–1835
182 Sun's zenith distance. The Sun's zenith distance at summer solstice and six additional stars, 1754-1811; comparison of computed and observed solstitial zenith distances, summer and winter, 1753-1819; proper motions in north polar distance for 35 stars; and a catalogue of 136 stars, with elements for their corrections, 1820.
1 volume.
circa 1820
183 Reduction of solar zenith distances.
1 volume.
1816
184 Reduction of solar zenith distances. Reduction of various solar zenith distances, with a table of the obliquity of the Sun.
1 volume.
1812–1820
185 Computation of solstices.
1 volume.
1814–1819
186 Declinations of stars at solstices. Computations of the declinations of stars at solstices.
1 volume.
1812–1821
187 Sun's declination at solstices and equinoxes. Computations of the declination of the Sun at solstices and equinoxes.
1 volume.
1815–1827
188 Computation of solstices.
1 volume.
1811–1827
189 Table of Sun's apparent obliquity.
1 volume.
1816–1828
190 Sun's latitude for summer solstice. Computations of the latitude of the Sun for the summer solstice of 1829; computations of corrections for some small stars, 1828-1831.
1 volume.
1828–1831
191 Computation of solstices. Computations of solstices and an abstract of the results.
1 volume.
1812–1835
192 Computation of right ascensions. Computations of right ascension from declination and obliquity, 1811-1814, 1817 and 1818.
1 volume.
1811–1818
193 Computation of observed equinoxes.
1 volume.
1816–1835
194 Computation of equinoxes. Computations of equinoxes and the error of equinoctial points.
1 volume.
1816–1835
195 Computation of north polar distances. Computations of north polar distances of the Sun, Moon and planets, January 1828 - 30 April 1830, corrected for index error and refraction, sometimes for semi-diameter and occasionally for parallax.
1 volume.
1828–1830
196 Computation of parallax. Computations of the parallaxes of the Moon and planets.
1 volume.
1831–1835
197 Computation of declination. Computations of the declination of the Sun, Moon and planets by combining circle reading, index error, refraction and parallax, 1 May 1830 - 31 December 1835.
1 volume.
1830–1835
198 Computation of stellar zenith distances. Computations of the zenith distances of Gamma Draconis and other zenith tube stars made from circle observations.
1 volume.
1834
199 Reduction of zenith tube observations. Computations of the reduction of observations made with the zenith tube.
1 volume.
1833–1834
200 Observations with zenith tube. Observations made with the zenith tube, with notes on faint and tremulous observations.
1 volume.
1834–1835
201 Zenith distances of stars. Zenith distances of stars near the zenith and comparison of results from the zenith tube with results from Edward Troughton and Thomas Jones' mural circles.
1 volume.
circa 1833
202 Reduction of fixed telescope observations. Reduction of observations made with the fixed telescope for Alpha Cygni.
1 volume.
1817–1833
203 Telescope observations. Observations of Alpha Cygni, Delta Cygni and Beta Aurigae with the fixed telescope, 1820-1825, and observations of Pallas and Ceres with the equatorial telescope, 13 March 1825.
1 volume.
1820–1825
204 Observations of solar eclipses. Original observations of the eclipses of the Sun, 1816, 1818 and 1820.
1 folder.
1816–1820
205 Observations of occultations.
1 volume.
1832–1835
206 Observations of eclipses. Original observations of eclipses of Jupiter's satellites and eclipses of the Sun and Moon (missing except for the volume's covers).
1 volume.
1832–1835
207 Observations of occultations and eclipses. Observations carried out by Mr Ellis.
1 volume.
1832–1835
208 Observations of occultations and eclipses. Observations carried out by William Rogerson.
1 volume.
1832–1835
209 Computation of mean times. Computations of the mean times of eclipses and occultations.
1 volume.
1811–1835
210 Computations on the comet of 1811.
1 volume.
1811
211 Computation of longitude and latitude. Computations of longitude and latitude for right ascension and north polar distance (probably of a comet).
1 volume.
1815
212 Stars compared with comet of 1815. Right ascensions and north polar distances of stars compared with the comet of 1815.
1 volume.
1815
213 Observations of Pallas, Ceres and Vesta. Observations of Pallas, Ceres and Vesta made with the equatorial telescope, 13, 16 and 17 March 1824.
1 volume.
1824
214 Observations of comets. Original observations of comets, including observation of the eclipse of the Sun, 28 November 1826.
1 volume.
1824–1832
215 Computations of Encke's comet. Computations of observations of Encke's Comet.
1 volume.
1828
216 Computation of a comet. Computation of a comet's latitude and longitude from right ascension and north polar distance, 17 January - 20 July [no year]; observation of rockets with Sir James South, 1831; note on the filing down of the transit instruments; and observations of the meridian mark, 1833-1834.
1 volume.
1831–1834
217 Observations of Halley's Comet. Observations of Halley's Comet with G.B. Airy.
1 volume.
1835
218 Errors of the ball clock. Errors of the ball clock, 6 November 1833 - 31 October 1835, compiled with G.B. Airy.
1 volume.
1833–1835
219 Experiments with Borda's pendulum.
1 volume.
1817–1818
220 Pendulum experiments.
1 volume.
1828–1829
221 Board of Visitors' report on printing.
1 volume.
1831
222 Catalogues and other papers. Various catalogues reduced to the beginnings of several years in right ascension and north polar distance for 1801-1830, comparison of catalogues at different epochs, and computed north polar distances by different refractions; computation of the Sun's diameter in turn reduced to the Earth's mean distance, 1801-1816; an account of William Hardy's transit clock, 1811-1830; and the zenith distance of Alpha Lyrae, 28 January 1825 - 17 May 1830, made with both Edward Troughton and Thomas Jones' mural circles.
1 folder.
1801–1830
223 Observations, correspondence and other papers. Observations of eclipses of Jupiter's first and second satellites and lunar distances, made by Captain Robert Campbell on Ascension Island, 1820; a letter from Captain Campbell to John Pond, 26 December 1821; a memorandum requesting corresponding observations of the eclipses to be taken at Greenwich, c. 1821; miscellaneous loose papers, 1812-1828; and miscellaneous correspondence, 1824-1831, from William Allen, S. Barker, William Barnes, James R. Booth, John Cooke, John Curnin, A. Currie, Henry Gardener, James Haighth, J. Hardright, Richard Hasken, J.F.W. Herschel, George Innes, Henry Kater, J. Lepard, Richard Priestly, James Sinclair, A.M. Skene, W.S. Stratford, E. Theynier, G. Wilson and James Wright.
1 bundle.
1812–1831
224 Plans for Newton monument. Plans for a proposed national monument to Sir Isaac Newton in Leicester Square, undated but possibly c. 1816.
1 folder.
circa 1816
225 Solar and stellar observations and computations. Various solar and stellar observations, 1816-1835; apparent right ascension of the Sun compared with the 'Nautical Almanac', 1816-1826; list of stars observed with the comet of 1830; various solar and stellar observations, 1816-1835; observations made with the zenith sector and comparative observations with Edward Troughton and Thomas Jones' circles, 1833; readings of four thermometers placed on Jones' circle, 1832-1833; undated table of the mean refractions of stars in Pond's catalogue; mean north polar distances of stars from circle observations, 1829-1834; altitudes of stars measured with six microscopes, 1835; working catalogue for 1835; computations of star corrections and magnetic observations, 1818-1819; and undated computations of star constants for certain stars.
1 volume.
1816–1835
226 Correspondence on inaccuracies. Undated correspondence on the inaccuracies to be found in the Greenwich observations of 1821 and 1822; printed transit observations of the fixed stars and planets over the meridian.
1 volume.
227 Magnetic observations. Observations of the variation of the magnetic needle.
1 envelope.
1815
228 Observations of comet of 1815. Observations of the comet of 1815 made with the 5-foot equatorial in the Western Dome.
1 envelope.
1815
229 Correspondence with Admiralty. Correspondence between the Admiralty office and the Royal Observatory, Greenwich, requesting the loan of chronometers for H.M. Ships. The principal correspondent is J. Barrow. Other correspondents include R.S. Dundas, G. Smith and J. Franklin.
1 volume.
1821–1826
230 Admiralty papers on chronometers. Admiralty papers sent to Pond concerning the fitting out of H.M. Ships with chronometers.
1 volume.
1827–1830
231 Admiralty papers on chronometers. Admiralty papers sent to John Pond and Thomas Taylor (First Assistant) concerning the fitting out of H.M. Ships with chronometers, 1831-1835. The volume also includes lists of small disbursements for chronometers, 1821-1826; letters, dated 1832-1835, concerning the purchase of two chronometers for New South Wales; and papers on the rates of Arnold 420 and 452.
1 volume.
1821–1835
232 Admiralty chronometer six day book.
1 volume.
1821–1827
233 Correspondence on chronometers. A Royal Observatory letter book containing correspondence concerning chronometers. Some of the letters are addressed to chronometer makers. Inverted at the back is a record of the letters received.
1 volume.
1822–1835
234 Reports on Royal Naval College chronometers. Lists of chronometers, 1821-1830, and of the mean daily rates of chronometers, 1830-1834, at the Royal Naval College, Portsmouth.
1 volume.
1821–1834
235 Correspondence on chronometers. Letters from H.C. Cox, the Agent of Devonport, on the receipt and weekly rates of chronometers, with brief reports on the chronometers' performances. There are also letters from W. Shield and P.D.H. Hay.
1 volume.
1823–1834
236 Naval captains' letters on chronometers. Letters from various naval captains, including R.C. Spencer, on the receipt of chronometers.
1 volume.
1820–1831
237 Letters from chronometer makers. Letters and declarations to Pond from chronometer makers, including Robert Molyneux, Parkinson & Frodsham, Thomas Earnshaw and E.J. Dent. The volume also includes five undated lists of makers' estimates for repair from Arnold and Arnold & Dent.
1 volume.
1821–1835
238 Chronometer ledger. A chronometer ledger for 1807-1825, with three additional entries dated 1835. The ledger records the ship each chronometer was supplied to, the officer in charge of the chronometer, the dates it was lent and returned, and to whom it was returned. There is a full index at the front.
1 volume.
1807–1835
239 Trials and ratings of chronometers. Lists of chronometers deposited at the Observatory for trials, with the daily ratings of each piece, covering the periods 1822-1825 and 1832-1835.
1 volume.
1822–1835
240 Admiralty chronometers account book. The Royal Observatory Admiralty chronometers account book recording payments made to chronometer makers.
1 volume.
1821–1828
241 Daily weather records. Elementary daily weather records describing air pressure, temperature, wind direction, rainfall, cloud cover and other meteorological incidents.
1 volume.
1 Jan. 1807-Oct. 1821
242 Daily weather records. Elementary daily weather records describing air pressure, temperature, wind direction, rainfall, cloud cover and other meteorological incidents.
1 volume.
1 Dec. 1819–31 Dec. 1831
243 Daily weather records. Elementary daily weather records describing air pressure, temperature, wind strength and direction, rainfall, cloud cover and other meteorological incidents.
1 volume.
1 Jan. 1832–31 July 1836
244 Letters on rocket experiments. Letters to Thomas Taylor, First Assistant, from J. [Stone?], concerning experiments using rockets to determine longitude, with several preliminary observations.
1 envelope.
1831
245 Rates of chronometers. Accounts of rates of chronometers on trial at the Royal Observatory, 1822-1836, preceded by chronometer rates for 1811-1816.
1 volume.
1811–1836
246 Catalogues and tables. Miscellaneous printed and manuscript catalogues and tables, including 'Value of Jones' micrometer on Jones' circle'; 'Catalogue of 45 Principal Stars'; tables of refractions by Bradley and Dr Brinkley; further tables of refractions; tables of the computations of the north polar distances of stars; 'Catalogue of the Right Ascensions of Thirty-Six Principal Fixed Stars. January 1, 1815'; 'Catalogue of the North Polar Distances of Forty-Two Principal Stars. Reduced to January 1, 1815'; and 'Lunar Nutation on North Polar Distance'.
1 volume.
circa 1815-circa 1821

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