0: The Royal Observatory, Greenwich: Home of the Greenwich Meridian and Greenwich Mean Time
1: The Royal Observatory Greenwich: A Brief History
2: The Greenwich Meridian
3: Contemporary accounts
4: The Greenwich site
5: The Herstmonceux years... 1948-1990
6: The Cambridge years ... 1990-1998
10: Telescopes
11: People
33: Publications
35: Governance - The Board of Visitors
36: Regulations
38: Funding
48: Technology
49: Libraries & Archives
100: Terms of use
800: Search screen
811: Royal Observatory Greenwich: Postcard catalogue
812: Royal Observatory Greenwich: Postcard catalogue
905: Telescope: The Western Equatorial (c.1824)
906: Telescope: Sisson's 5-foot Equatorial Sectors (I773)
907: The Buildings at Greenwich
908: Pay
909: Royal Warrants
910: The Deal Time Ball (1864-1927)
911: Abinger Magnetic Observatory (1923-1957)
912: Bristol & Bradford on Avon (1939-1948)
913: Bath (1939-1949)
914: Hartland Magnetic Observatory (1955-1967)
915: The Royal Observatory at the Cape of Good Hope (1959-1971)
916: Flamsteed House
917: The Meridian Building
918: The Altazimuth Pavilion
919: The Great Equatorial Building (28-inch telescope dome)
920: The South Building (formerly the New Physical Observatory), the Lassell Dome, & the Lower Store
921: The Garden House/Stables/Plant Room
922: Stables, workshops, sheds and other miscellaneous buildings
923: The Cookson Hut and Pavilion
924: The Transit Pavilion
925: The Porter's Lodge/Gate House
926: The Magnetic Observatory at Greenwich
927: The New Library
928: The Yapp Dome
929: Telescope: 6-inch Franklin Adams wide-angle Star Camera (1898)
930: Telescope: Graham's 2½-foot Equatorial Sector (c.1735)
931: Christie's 1909 description of the Buildings and Instruments of the Magnetical and Meteorological Observatory
932: Observations and associated catalogues, Annals, Bulletins and Circulars
933: Annual Reports
934: Scientific Papers
935: The Nautical Almanac and associated publications
936: Visitor Guides and material for non-professionals
937: Telescope: Flamsteed's 7-foot Equatorial Sextant (1676)
938: The Reversible Transit Circle Pavilion
939: Pay - Background Information
940: Pay of the Astronomers Royal & Directors, 1675-1998
941: Pay 1675-1811
942: Pay 1871-1945
943: Pay 1946-1998
944: Pay 1811-1835
945: Pay 1836-1871
946: Airy's 1843 address to the Board of Visitors arguing the case for a new altazimuth instrument
947: Airy's 1855 address to the Board of Visitors arguing the case for a new equatorial instrument
948: Regulations, 1874
949: Regulations, 1853
950: Proposed regulations, 1765
951: People - a guide to grading and staffing structures
952: Individuals - a guide to individuals who worked at the Observatory
953: Housing, 1822-1910
954: A family concern - a list of families where more than one member worked for the Observatory
955: The visitors - a list of those who served on the Board of Visitors 1831-1964
956: Departments of the Royal Observatory
957: Board of Ordnance Funding (1675-1818)
958: Admiralty Funding (1811-1965)
959: Funding by the Research Councils (1965-1998)
960: Civil List Funding (1752-1875)
961: Private Patronage
962: Treasury funding via the budget for Civil Services and Stationary Office
963: Board of Trade Funding
964: Navy Estimates for the Observatory, 1812-1881/2
965: Instruments on Loan
966: Grounds and Gardens
967: List of Enclosures and Reversions
968: The Courtyard
969: The Astronomers' Garden (frmerly the Upper Garden)
970: The Meridian Garden
971: The Garden to the west of Flamsteed House
972: The Magnetic and South Grounds
973: The Observatory Garden (formerly the Lower Garden)
974: The Christie Enclosure
975: Estimated costs of moving the Magnetic Observatory in 1921
976: Text of the Warrant for the payment of Flamsteed's Salary
977: Text of the Warrant for building the Observatory
978: Text of the Warrant setting up the Board of Visitors (1710)
979: Text of the Warrant reconstituting the Visitors (1765)
980: Text of the Warrant reconstituting the Visitors (1820)
981: Text of the Warrant reconstituting the Visitors (1830)
982: Text of the Warrant reconstituting the Visitors (1858)
983: Text of the Warrant dissolving the Board (1965)
984: Postcards: catalogue and digital archive
985: Stereoviews
986: Addresses of the established staff 1822-1910
987: Housing – a guide to who lived where between 1822 and 1910
988: List of streets and the assistants who lived in them (1822-1910)
989: Building and site plans (Greenwich)
990: The Chronometer Rooms at Greenwich
991: The astronomical regulators and their historic locations
992: Historic locations of the library
993: The changing nomenclature of the Observatory Buildings
994: Deteriorating conditions at Greenwich and the selection of a new location for the Observatory
995: The buildings and grounds at Herstmonceux
996: Herstmonceux - people, politics and changing priorities
997: The head of the Observatory - the Astronomer Royal / Director
998: The First / Chief Assistants and the Deputy Directors
999: The Assistant grades
1000: The post of Computer
1001: The Superintendent posts
1002: The staff of the Magnetical and Meteorological Observatory
1003: People: Vinicio Barocas
1004: The Industrial Grades - labourers, night watchmen, mechanics, gardeners, cleaners and others
1005: People: Jonckheere, Robert
1006: Kilby, Horatio Herbert Milborrow
1007: Contemporary Account from 1798
1008: Contemporary accounts from 1769
1009: Contemporary Account from 1839
1010: Contemporary account from 1829
1011: Contemporary account from 1777
1012: Recollections, 1951-1957
1013: Contemporary account from 1858
1014: Contemporary account from 1857
1015: Contemporary account from 1842
1016: Contemporary account from 1863
1017: Contemporary account from 1862
1018: Contemporary account of the years 1930-1972
1019: Contemporary account of the years 1948-1990
1020: Contemporary account from 1849
1021: Contemporary account from 1833
1022: Contemporary account from 1850
1023: Contemporary account from 1834
1024: Contemporary account from 1824
1025: Contemporary account from 1834
1026: Contemporary account from 1844 - The Magnetic and Meteorological Observatory
1027: Contemporary account from 1844 - The Time Ball
1028: Contemporary account from 1847
1029: Contemporary account from 1861
1030: Contemporary account from 1891
1031: Contemporary account from 1889
1032: Contemporary account from 1835
1033: Contemporary account from 1866
1034: Contemporary account from 1866
1035: Contemporary account from 1897/98
1036: Contemporary account from 1900
1037: Navy Estimates for the Observatory, 1881/2-1886/7 & 1898/9
1038: List of appendices in Volumes of Greenwich Observations (1835-1955)
1039: List of Separate Publications, not in the Greenwich Volumes (1836-1955)
1040: Rates of chronometers and watches on trial at the Observatory, 1766-1915
1041: A List of Public Institutions and Individuals entitled to receive a copy of the Astronomical Observations in 1828
1042: Extracts from Reflections on the Decline of Science in England by Charles Babbage
1043: Telescope: Isaac Roberts 20-inch reflector (1885)
1044: Telescope: 30-inch Steavenson Reflector (1939)
1045: Telescope: Flamsteed's Mural Arc (1689)
1046: Telescope: The Lassell 2-foot Reflector (1847)
1047: Telescope: Melbourne Reversible Transit Circle (1883)
1048: Telescope: Sirius Telescope (1677)
1049: The Herstmonceux Conferences
1050: Press articles and letters relating to the efficiency reviews carried out between 1983 & 1986
1051: Notes, Reports, Manuals, house journals, etc
1052: Chairmen of the Board of Visitors 1710-1964
1053: Telescope: Halley's 8-foot Iron Mural Quadrant (1725)
1054: Telescope: Bradley's 8-foot Brass Mural Quadrant (1750)
1055: Telescope: Hooke's 10-foot Mural Quadrant (1676)
1056: Telescope: Flamsteed's 'Slight' Mural Arc (1683)
1057: Telescope: 13-inch Astrographic Refractor (1890)
1058: Contemporary account for the Dyson years (1894–1905 & 1910–1933)
1059: Visit
1060: The installation of the Cooke Reversible Transit Circle and the construction of its pavilion
1061: People: John Leslie Rudd
1062: Telescope: Cookson's Floating Zenith Telescope (1900)
1063: Telescope: Airy's Reflex Zenith Tube (1851)
1064: Telescope: Pond's 25-foot Great Zenith Tube (1833)
1065: Telescope: Bradley's 12.5-foot Zenith Sector (1727)
1066: Telescope: Pond's 9.5-foot Zenith Tube (1812)
1067: Telescope: Pond’s 8-foot Achromatic Zenith Telescope (c.1820?)
1068: Telescopes: alpha Aquilae and alpha Cygni Telescopes (1816)
1069: Telescope: Airy's Water Telescope (1870)
1070: Telescope: Flamsteed's Well Telescope (1676)
1071: Telescope: Photographic Zenith Tube (1955)
1072: Telescope: Cooke Reversible Transit Circle (1933)
1073: Telescopes: Horizontal Transit Instrument & Mirror Transit Circle
1074: Extracts from the Reports of the Astronomer Royal relating to the Horizontal Transit Instrument & Mirror Transit Circle
1075: Telescope: Ramage's 25-foot telescope (c.1820)
1076: Telescope: Halley's 5-foot Transit Instrument (1721)
1077: Telescope: Troughton 10-foot Transit Instrument (1816)
1078: Inventories
1079: Astronomical Regulator: Johnson
1080: Plan of the Front Court (Courtyard) in 1902
1081: Transit Pavilion, transverse section looking north and plan on observing platform
1082: Plan and section of the observing room (hut) used by the Greenwich observers in the 1888 Paris-Greenwich longitude determination
1083: Plan and sectional views of the Great Equatorial Building as it existed in 1869
1084: The Greenwich Time Service
1085: The Shepherd Gate Clock
1086: Clocks & Time
1087: The astronomical basis of timekeeping
1088: The determination of precise time
1089: Telescope: 4-inch Danjon Prismatic Astrolabe (1956)
1090: Telescope: Christie's Altazimuth Telescope (1896)
1091: Telescope: Airy's Altazimuth Telescope (1847)
1092: Contemporary Account from 1906 - The Menace to the Meridian
1093: Telescope: The 26-inch Photographic Refractor & the 30-inch reflector of the Thompson Equatorial (1896)
1094: Contemporary account from 1887/8
1095: Telescope: Lee Equatorial (1829)
1096: Telescope: Naylor Equatorial
1097: Telescope: 34-inch Hewitt Camera (1962)
1098: People: E Walter Maunder
1099: People: Henry Park Hollis
1100: People: Arthur Matthew Weld Downing
1101: People: William Grasett Thackeray
1102: People: Thomas Lewis
1103: People: Andrew Crommelin
1104: People: Walter Bryant
1105: People: Thomas Hudson
1106: People: George Humphreys
1107: People: George Stickland Criswick
1108: People: Arthur Bowden
1109: People: William Thynne Lynn
1110: People: James Carpenter
1111: People: Henry James Carpenter
1112: People: Charles Todd
1113: People: Henry Todd
1114: People: William Ellis
1115: People: John Charles Henderson
1116: People: Hugh Breen (Jnr)
1117: People: Edwin Dunkin
1118: People: James Glaisher
1119: Newsreels and historic movie clips
1120: People: William Richardson
1121: People: William Rogerson
1122: People: Thomas Ellis
1123: People: Frederick Walter Simms
1124: People: John Henry Belville
1125: People: Thomas Taylor
1126: People: Thomas Glanville Taylor
1127: People: Thomas Firminger
1128: People: John Brinkley
1129: People: Thomas Evans
1130: People: David Kinnebrook
1131: Maskelyne's analysis of Kinnebrook as an observer and a statement of the observing method in use at Greenwich in 1796
1132: People: John Hellins
1133: People: William Malachy Hitchins
1134: People: Malachy Hitchins
1135: People: Joseph Dymond
1136: People: William Garrard
1137: People: Joseph Lindley
1138: People: George Gilpin
1139: People: Charles Green
1140: People: Ruben Burrow
1141: People: William Bayly
1142: People: Joshua Moore
1143: People: John Burnstead
1144: People: John Crosley
1145: People: Benedict Chapman
1146: People: Joseph Garnett
1147: People: James Hodgson
1148: People: Abraham Sharp
1149: People: Thomas Weston
1150: People: Joseph Crosthwait(e)
1151: People: Isaac Woolferman
1152: People: John Witty
1153: People: Bertram Bennett
1154: Maskelyne's Assistants (1765–1811)
1155: People: Cuthbert Denton
1156: People: Thomas Smith
1157: People: John Stafford
1158: People: Abraham Ryley (Riley)
1159: People: Samuel Clowes
1160: Flamsteed's Correspondence
1161: People: Luke Leigh
1162: People: William Bossley
1163: People: John Bradley
1164: People: Charles Mason
1165: People: William Christie, Astronomer Royal
1166: Flamsteed Society Lecture, 28 April 2015
1167: Spectroscopes: Christie's direct-vision 'half-prism' spectroscope (1877)
1168: Spectroscopes: Spectroscope by Browning (1874)
1169: The Greenwich and Newbegin spectrohelioscopes
1170: Telescope: The Shuckburgh Equatorial (1791)
1171: Telescope: The Sheepshanks Equatorial (1838)
1172: Telescope: Merz 12.8-inch Visual Refractor (1859)
1173: Spectroscope: Airy’s Prismatic Spectrum-Apparatus (1862)
1174: Telescope: 28-inch Refractor (1893)
1175: Transfer of the 28-inch Refractor from Herstmonceux to Greenwich in 1971
1176: Maclean star-spectroscope (1891/2)
1177: Astronomical Regulators
1178: Chronometers
1179: Astronomical Regulator: Arnold 1
1180: Astronomical Regulator: Arnold 2
1181: Astronomical Regulator: Graham 1
1182: Astronomical Regulator: Graham 2
1183: Astronomical Regulator: Graham 3
1184: Astronomical Regulator: Shelton
1185: Journeyman Clocks
1186: Astronomical Regulator: Arnold (hour angle/degree clock)
1187: Contemporary account from 1872
1188: Science
1189: Transits of Venus
1190: The 1874 Transit of Venus Expeditions
1191: Telescope: The Thompson 9-inch Photoheliograph (1891)
1192: Aerial Views (Greenwich)
1193: Contemporary account from 1710
1194: Premises of (HM) Nautical Almanac Office since its creation in late 1831 or early 1832
1195: People: Benjamin Davies Evans
1196: Royal Observatory Hockey Club fixtures, 1930-1939
1197: People: Albert Walter
1198: The Royal Observatory Hockey Club (ROHC)
1199: People: Philip Herbert Cowell
1200: Unveiling of the Wolfe Statue (5 June 1930)
1201: People: John Russell Hind
1202: People: James Paul
1203: People: Joseph Edward Evans
1204: People: Thomas Downs
1205: People: William Carpenter Nash
1206: People: Charles George Talmage
1207: People: Mondeford Reginald Dolman
1208: People: Malcolm Jason Brown
1209: People: Henry Charles Criswick
1210: People: Edward Hanson (Snr)
1211: People: Edward Beresford Hanson
1212: People: John Lucas
1213: People: John Richard Lucas
1214: Visit of the International Hydrographic Conference, 26 June 1919
1215: People: Walter Wickham
1216: People: John Chapman Hartnup
1217: People: Richard Harris
1218: Flamsteed Society Lecture, 10 May 2016
1219: Contemporary account from 1901
1220: People: Charles Craven Lacey
1221: Visit of the King of Afghanistan, 22 March 1928
1222: Contemporary account from 1902
1223: Plan from 1676: Iconographia Speculae Regiae Grenovici (Francis Place)
1224: Plan: site plan from 1835 (from The Weekly Visitor)
1225: Telescope: The Kew Photoheliograph (1854)
1226: Photoheliographic Observations
1227: The 'Reserved Ground' of Greenwich Park
1228: Telescope: Corbett Equatorial
1229: Telescope: Hodgson Equatorial
1230: Ministry of Works funding (Ministry of Public Buildings and Works from 1962)
1231: Telescope: Simms No.1 & Simms No.2 (6-inch equatorials)
1232: Orpington Astronomical Society Lecture, 24 November 2016
1233: Description of the Airy Transit Circle from the introduction to the 1908 volume of Greenwich Observations
1234: Telescope: Airy's Transit Circle (1850)
1235: Transcript of Airy’s 1847 Address to the Board of Visitors regarding the possible acquisition of a Transit Circle
1236: Recollections, 1970-1975
1237: The Personal Equation Machine (used with the Airy Transit Circle)
1238: The Chronograph (used with the Airy Transit Circle)
1239: Instruments used with Meridian Marks
1240: The adoption of a Prime Meridian and the International Meridian Conference of 1884
1241: Contemporary account from the late 1930s
1242: London County Council Generating Station at Greenwich (Parliamentary Report)
1243: Greenwich Power Station
1244: Ticking for Britain: the forgotten story of George W Rickett
1245: Distribution of time by the Belvilles
1246: Chronometer Section: 1914-1981 by WP Roseman
1247: The staff of the Chronometer Department
1248: A brief history of Chronometer testing and repair at the Royal Observatory
1249: Contemporary account from 1866
1250: Contemporary account from 1850
1251: Telescope: The Dallmeyer Photoheliographs (1873)
1252: Anniversary celebrations of the Observatory’s foundation
1253: Burial places of the first nine Astronomers Royal
1254: The burial place of John Flamsteed the first Astronomer Royal
1255: The burial place of James Bradley the third Astronomer Royal
1256: The burial place of George Airy the seventh Astronomer Royal
1257: The burial place of Nevil Maskelyne the fifth Astronomer Royal
1258: The old churchyard, St Margaret's Lee: the burial place of Halley, Bliss and Pond - the second, fourth and sixth Astronomers Royal
1259: Contemporary account from 1896
1260: Contemporary account from 1850
1261: The Yapp Telescope (reprint from The Engineer, 1934)
1262: Telescope: The Yapp 36-inch Reflector
1263: Royal Observatory Bulletins, Number 118: The Cassegrain Spectrograph of the Yapp 36-inch Reflector at Herstmonceux
1264: Astronomical Regulator: Earnshaw
1265: Contemporary account from 1897
1266: Contemporary account from 1960
1267: Contemporary account from about 1930
1268: The Time Department Control Rooms and Time Desk
1269: Herstmonceux Castle in old photographs (1850-1910)
1270: Herstmonceux Castle (eighteenth century engravings)
1271: Historic maps of Greenwich
1272: Ripples in time: the building of Greenwich Power Station and the unintended consequences for the Royal Observatory
1273: Plan of Herstmonceux Castle
1274: People: Annie Scott Dill Maunder (nee Russell)
1275: Contemporary account from 1901
1276: Chingford (1822-1924)
1277: Extracts from the Reports of the Astronomer Royal relating to the buildings and grounds (1836-1964)
1278: Extracts from the Reports of the Astronomer Royal relating to chronometers (1912-1964)
1279: William Christie and the Tower House at Downe
1280: Christie's 'Lady Computers' - the astrographic pioneers of Greenwich
1281: Opportunity or exploitation: Women professionals at the Royal Observatory, Greenwich (1890–1895) Flamsteed Society Lecture, 8 January 2019
1282: Contemporary account from 1967
1283: General Relativity and the 1919 Solar Eclipse
1284: Eclipse expeditions
1285: Recollections from 1966 & 1968-85
1286: A brief history of the Time Department from 1923 to 1948
1287: Extracts from the Reports of the Astronomer Royal relating to the Time Service (1912-1964)
1288: People: Charles Rundle Davidson
1289: People: Arthur Stanley Eddington
1290: The quest for longitude and the rise of Greenwich - a brief history
1291: People: Charles Dilkes Loveless
1292: The Cecil Beaton photographs
1293: Bamberg Broken Transit (early 20th C)
1294: Small Reversible Transits - five in total (1870)
1295: Small Transit Telescope by Cooke, Troughton & Simms (originally ordered for Singapore)
1296: Bradley's 8-foot Transit Instrument (1750)
1297: Time related activities at the Royal Observatory Greenwich by John Pilkington (1986)
1298: Clock Star observers with the Small Transit Telescopes 1927-1958
1299: Airy's Zenith Sector (1841/2) - designed for the use of the Ordnance Survey
1300: People: George Airy, the seventh Astronomer Royal
1301: People: John Pond, the sixth Astronomer Royal
1302: Contemporary account from 1893
1303: Board of Longitude - Expenses and salaries paid to the Commissioners, Secretary, Superintendents etc
1304: Board of Longitude - the Commisioners
1305: Sheet music from 1746 - On Greenwich Park
1306: The Board of Longitude
1307: Papers of the Board of Longitude
1308: Secretaries of the Board of Longitude
1309: Longitude Acts
1310: Board of Longitude - books and academic papers
1311: Transcripts of the Longitude Acts
1312: The original copy of the1714 Longitude Act in the Parliamentary Archives
1313: The Observatory Library
1314: Extracts from the Reports of the Astronomer Royal and Directors relating to the Library and Archives (1836-1987)
1315: Location of the Observatory library and record rooms at Greenwich
1316: History of the Royal Observatory Library and Records at Greenwich
1317: The Observatory Records at Greenwich – a brief history
1318: The manuscript observations of the first four Astronomers Royal
1319: Flamsteed's Historia Coelestis and the etchings of Francis Place - a comparative study
1320: Telescopes :Flamsteed's Mast Telescopes and other 'long' Refractors
1321: Mycenae House Local History Group Lecture, 4 Octoer 2021
1322: The George Rodger photographs from the Life Photo Collection (September 1946)
1323: Telescope: Portable Transit by Brauer (1866)
1324: Telescopes: Five Portable Altazimuth Instruments by Troughton & Simms (part of the1874 Transit of Venus equipment)
1325: Telescope: Cooke 6-inch Equatorial No.2
1326: Astronomical Regulator(s): Molyneux
1327: Astronomical Regulators: Shortt 'free-pendulum' clocks Nos: 3, 11, 16, 40, 49, 61, 66 & 67
1328: Astronomical Regulators: The Riefler and Cottingham Clocks
1329: Astronomical Regulator: Dent 1906
1330: Astronomical Regulator: Dent 2
1331: Extracts from the Report of the proceedings of the Royal Observatory Edinburgh relating to the Greenwich Time Service (1940–1946)
1332: Astronomical Regulators: Dent 1914, 1915 and 1916, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 and 2017
1333: Extracts from the Reports of the Astronomer Royal relating to clocks, chronometers and the time-service (1869-1911)
1334: Connected histories: the triangle and the Royal Observatory - homes, people, institutions
1335: Telescope: Isaac Newton Telescope (1967/1984)
1336: Aerial views of Herstmonceux Castle showing the wartime hutments
1337: Dorking Local History Group Lecture: 4 July 2022
1338: An introduction to the Quartz Clocks of the Greenwich Time Service
1339: The Quartz Clock, Q3, installed at Greenwich in 1939 and re-erected at Abinger in 1943
1340: The Quartz Clocks A1, B1 & B2 installed at Abinger and Edinburgh in February 1944
1341: The Quartz Clocks installed at Abinger and Greenwich from mid-1944 onwards
1342: The Quartz Clocks at Herstmonceux
1343: The Quartz Clocks of the Greenwich TIme Service
1344: The phonic Motors of the Greenwich Time Service
1345: The atomic clocks of the Greenwich Time Service
1346: Extracts from the (annual) Reports relating to the Time Service and Time and Latitude Service (1965-1987)
1347: Extracts from the Royal Observatory Bulletins and Greenwich Time Reports
1348: Royal Observatory Bulletins Number 105: Time and Latitude Service 1965 January-March
1349: The Rugby Time Signals (GBR & MSF)
1350: Astronomical Regulators trialed at Greenwich: Cottingham Riefler clocks made for the Observatories at Mauritius and Hong Kong
1351: Astronmical Regulator: Molyneux & Cope
1352: Astronomical Regulator: Hardy
1353: Astronomical Regulator: Graham (Week Clock)
1354: Determinations of the difference in longitude between the Greenwich and Paris Observatories and between Greenwich and elsewhere
1355: The British Eclipse Expedition to Christmas Island
1356: Statistics relating to the chronometer trials (1822–1915)
1357: Extracts from the Reports of the Astronomer Royal relating to clocks, chronometers, the time-ball and longitude determinations (1836–1868)
1358: The Royal Observatory and the Giant Steps (the Grand Ascent)
1359: test page