Janus: Greenwich Reduction Registers

RGO Archives/RGO 127 contains:
1	''Calculation of Earth's Tabular Place, by Carlini's Solar Tables, Milan Ephemeris 1833"
2	''Computation of North Polar Distances, from Quadrant Observations''
3	''Calculation of North Polar Distances from Circle Observations, by Index Errors: June 1812 to February 1820''
4	''Calculation of North Polar Distances from Circle Observations, by Zenith Points''
5	''Computation of Longitude and Ecliptic Polar Distance, from Right Ascension and North Polar Distance''
6	''Computation of Heliocentric Places'' of Planets
7	''Computation of Planet's Tabular Geocentric Place''
8	''Formulation of Normal Places and Geocentric Errors'' together with ''Formulation of Co-efficients of Normal Heliocentric Errors''
9	''Phenomena of Jupiter's Satellites: 1898 to 1909''
10-13	Star Ledgers

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Greenwich Reduction Registers

Title	''Calculation of Earth's Tabular Place, by Carlini's Solar Tables, Milan Ephemeris 1833"
Reference	RGO 127/1
Covering Dates	1835–1845 (dates inferred)
Extent and Medium	10 volumes; paper

Content and context

These volumes contain planetary observation reduction ''Form No. 6". Volumes /1a-e and /2a-e are two, partially duplicated, series of material and represent the work of two different calculators (one 'J.W.T.' and John Glaisher respectively). Neither series is complete.

RGO Archives/RGO 127/1 contains:

Reduction ledger: 28 September 1750 to 21 April 1758.
1 volume; paper.

1835–1845

Reduction ledger: 9 November 1762 to 31 October 1768.
1 volume; paper.

1835–1845

Reduction ledger: 19 March 1790 to 27 May 1806.
1 volume; paper.

1835–1845

Reduction ledger: 19 July 1828 to 15 November 1830.
1 volume; paper.

1835–1845

Reduction ledger: 1830.
1 volume; paper.

1835–1845

Reduction ledger: 31 October 1768 to 20 March 1790. The entries in this volume are labelled ''Progressive number 1032-1382''.
1 volume; paper.

1835–1845

Reduction ledger: 27 May 1806 to 17 January 1820. The entries in this volume are labelled ''Progressive number 1717-2064.''.
1 volume; paper.

1835–1845

Reduction ledger: 12 December 1822 to 17 May 1828. The entries in this volume are labelled ''Progressive number 2406-2738''.
1 volume; paper; There is considerable mould damage..

1835–1845

Reduction ledger: 18 May 1828 to 15 October 1830. The entries in this volume are labelled ''Progressive number 2739-3071''.
1 volume; paper; The covers are detached and the spine is disintegrating..

1835–1845

Reduction ledger: 15 October to 31 December 1830. The entries in this volume are labelled ''Progressive number 3072-3169''.
1 volume; paper; There is considerable mould damage..

1835–1845