ArtHitParade
ArtHitParade on Twitter
  • Home
    • Contact
  • Next Auctions
    • Calendar
  • Top 10
    • Origin
    • From 600 BCE to CE
    • Years 1 to 1000
    • Years 1000 to 1300
    • 14th Century
    • 15th Century >
      • Years 1400-1429
      • Years 1430-1459
      • Years 1460-1479
      • Years 1480-1499
    • 16th Century >
      • Years 1500-1519
      • Decade 1520-1529
      • Decade 1530-1539
      • Years 1540-1569
      • Years 1570-1599
    • 17th Century >
      • Decade 1600-1609
      • Decade 1610-1619
      • Decade 1620-1629
      • Decade 1630-1639
      • Decade 1640-1649
      • Decade 1650-1659
      • Years 1660-1679
      • Years 1680-1699
    • 18th Century >
      • Years 1700-1719
      • Decade 1720-1729
      • Decade 1730-1739
      • Decade 1740-1749
      • Decade 1750-1759
      • Decade 1760-1769
      • Decade 1770-1779 >
        • 1776
      • Decade 1780-1789
      • Decade 1790-1799
    • 19th Century >
      • Decade 1800-1809
      • Decade 1810-1819
      • Decade 1820-1829
      • Decade 1830-1839
      • Decade 1840-1849
      • Decade 1850-1859
      • Decade 1860-1869
      • Decade 1870-1879
      • Decade 1880-1889 >
        • 1887
        • 1888
        • 1889
      • Decade 1890-1899 >
        • 1890
        • 1892
    • 20th Century >
      • Decade 1900-1909 >
        • 1904
        • 1905
        • 1907
        • 1908
        • 1909
      • Decade 1910-1919 >
        • 1911
        • 1912
        • 1913
        • 1914
        • 1915
        • 1916
        • 1917
        • 1918
        • 1919
      • Decade 1920-1929 >
        • 1920
        • 1923
        • 1925
        • 1926
        • 1927
        • 1928
        • 1929
      • Decade 1930-1939 >
        • 1930
        • 1931
        • 1932
        • 1933
        • 1934
        • 1935
        • 1936
        • 1937
        • 1938
        • 1939
      • Decade 1940-1949 >
        • 1941
        • 1942
        • 1945
        • 1947
        • 1948
        • 1949
      • Decade 1950-1959 >
        • 1950
        • 1951
        • 1952
        • 1953
        • 1954
        • 1955
        • 1956
        • 1957
        • 1958
        • 1959
      • Decade 1960-1969 >
        • 1960
        • 1961
        • 1962
        • 1963
        • 1964
        • 1965
        • 1966
        • 1967
        • 1968
        • 1969
      • Decade 1970-1979 >
        • 1970
        • 1971
        • 1972
        • 1975
        • 1977
        • 1979
      • Decade 1980-1989 >
        • 1980
        • 1981
        • 1982
        • 1983
        • 1985
        • 1986
        • 1987
        • 1988
      • Decade 1990-1999 >
        • 1993
        • 1994
        • 1996
        • 1997
        • 1998
    • Decade 2000-2009 >
      • 2000
      • 2001
      • 2006
      • 2007
    • From 2010 to Now >
      • Current Art
  • Roman Empire
  • Renaissance
  • Painting
    • Ancient Painting >
      • Oil on Copper
    • 18th Century Painting
  • Ancient Drawing
  • Art on Paper
  • Sculpture
    • Bust
    • Ancient Sculpture
    • Italian Sculpture
    • French Sculpture
  • Women Artists
    • Ancient Art by Women
    • Art by Women ca 1960
    • Current Art by Women
  • Furniture
    • Chairs and Seats
    • Colonial Furniture
    • Ancient French Furniture
    • 18th Century Furniture
    • 20th Century Furniture >
      • Art Deco
  • Prints
    • Ancient Prints
    • Modern Prints
  • Photo
    • Old Photos >
      • Travel Photos
      • Early French Photo
    • Photos 1900-1940 >
      • Photos in the 1920s
    • Photos 1970s 1980s
    • Gursky
    • Photos by Women
  • The Man
  • The Woman
  • Children
  • Man and Woman
  • Groups
  • Self Portrait
    • Self Portrait 2nd page
  • Nude
  • Abstract Art
    • Abstract Art - 2nd page
  • Landscape
    • Midi
    • Alps
    • Mountains in China
  • Cities
    • Venice
    • Paris
    • Los Angeles
  • Flowers
    • Bouquet
  • Animals
    • Bird
    • Cats
    • Horse
  • Dragon
  • Tabletop
  • Early Still Life
  • Music and Dance in Art
    • Music in Old Painting
  • Sport in Art
  • Orientalism
    • Orientalism 1830-1900
  • France
    • Louis XIV to XVI
    • Revolution and Empire
    • Louis XVIII to 2nd Empire
    • Ancient French Painting
    • Cézanne
    • Monet >
      • Monet before 1878
      • From Vétheuil to Giverny
      • Pond by Monet
    • Gauguin
    • Lautrec
    • Matisse
    • Post War French Art >
      • Klein
  • Italy
    • Italian Painting 1280-1700
    • Canaletto
    • Modigliani
    • Modern Italian Art
    • Italy 2nd page
  • Switzerland before 1940
  • Giacometti
    • Giacometti 1947-53
  • Bacon
    • Bacon before 1963
    • Bacon 1963-70
    • Later Bacons
  • UK - 2nd page
    • Ancient England
    • George I to III
    • George IV to Victoria
    • British Royals
    • Turner
    • Freud
    • Hockney
    • Doig
  • Germany
    • Ancient Germany
    • Richter >
      • Richter before 1986
    • Germany - 2nd page
  • Rembrandt
  • Van Gogh
  • De Kooning
  • Holland 2nd page
  • Old Flanders and Belgium
    • Flemish Art >
      • Rubens
    • Magritte
    • Tintin
    • Belgium 2nd page
  • Picasso
    • Picasso before 1907
    • Picasso 1907-1931
    • Picasso in the 1930s
    • Picasso 1940-1960
    • Picasso from 1961
    • Prints by Picasso
  • Spain - 2nd page
    • Ancient Spain
    • Miro
    • Spain 3rd page
  • Klimt
  • Austria 2nd page
  • USA
    • US Independence
    • Development of USA
    • US Civil War
    • Far West
    • US Painting before 1940
    • Rockwell
    • Rothko >
      • Early Rothko
      • Rothko 1957-70
    • Pollock
    • Lichtenstein >
      • Lichtenstein after 1965
    • Warhol >
      • USA by Warhol
      • Celebrities by Warhol
      • Later Warhols
    • Twombly
    • Koons
    • Basquiat
    • USA 2nd page
  • Canada
  • Central and South Americas
  • China
    • Archaic China >
      • Ritual Bronzes
    • Northern Song
    • Southern Song and Yuan
    • Early Ming
    • Later Ming
    • Early Qing
    • Qianlong
    • Modern China >
      • Sanyu
      • Zao Wou-Ki
    • New Chinese Painting
    • Chinese Porcelain >
      • Song to Yuan Porcelain
      • Ming Porcelain
      • Qing Porcelain
    • Chinese Art
    • Chinese Calligraphy
    • Jade
  • India
    • Tibet and Nepal
    • Modern India >
      • Gaitonde
  • Persia
  • Japan
  • Russia
    • Russia 1700-1900
    • Kandinsky
  • Eastern Europe
    • Chagall
  • Northern Europe
    • Munch
  • Egypt
  • Tropical Africa
    • Congo
    • Gabon
    • Mask
  • Tribal Oceania
  • Australia
    • Colonial Australia
  • Islam
  • Buddhism
    • Early Buddhist Sculpture
  • Judaica
  • Christianity
    • Madonna and Child
  • Cars
    • Birth of Automobile
    • Cars of the 1910s
    • Cars of the 1920s
    • Cars of the 1930s >
      • Cars 1930-33
      • Cars 1934-36
      • Cars 1937-39
    • Post War Cars >
      • Cars 1940-50
      • Cars 1951-53
      • Cars 1954-55
      • Cars 1956-57
      • Cars 1958-59
    • Cars of the 1960s >
      • Cars 1960-61
      • Cars 1962-64
      • Cars 1965-67
    • Cars 1970s 1980s
    • Supercars
    • Hypercars
    • Ferrari >
      • Early Ferrari
      • From LWB to GTO >
        • California Spider
      • Ferrari after 1962
    • Italian Cars
    • Mercedes-Benz
    • Porsche
    • British Cars >
      • Aston Martin
      • Jaguar
      • McLaren
    • Bugatti
    • French Cars
    • Duesenberg
    • Ford and Shelby
    • Cars - 2nd page
  • Motorcycles
  • Jewels
    • White Diamond
    • Pink Diamond
    • Blue Diamond
    • African Diamonds
    • Jewels - 2nd page
    • Cartier
  • Silverware
  • Coin
    • Gold Coins
    • Silver Coins
    • Antique Coins
    • Coins 1000-1775
    • Coins 1776-92
    • Coins 1793-99
    • Coins 1800-49
    • Coins 1850-69
    • Coins 1870-99
    • 20th century Coins
    • British Coins
    • Dollars and Eagles
    • Asian Coins
  • Paper Currency
  • Medal and Decoration
    • Nobel Medals
  • Time Pieces
    • Clocks >
      • Old Clocks
    • Mechanical Craft ca 1800 >
      • Jaquet-Droz and Followers
    • Modern Watches
    • New Watches
    • Patek Philippe >
      • Development of Patek Philippe
      • Patek Philippe 1945-1980
    • Rolex
    • Watches 2nd page
    • English Time Pieces
    • French Time Pieces
  • Glass and Crystal
    • Glass before 1900
    • Glass 1900-10
  • From Terracotta to Porcelain
    • Ceramic before 1760
  • Textiles
  • Garment
  • Fashion
  • Books
    • Incunabula
    • Books 1501-1700
    • Fine Books 1700-1850
  • Literature
    • Literature in English
    • Literature in French
  • Poems and Lyrics
  • Autograph
  • Manuscript
  • Religious Texts
  • Political Writing
  • Comic Books
  • Comic Art
  • Travel
  • Space
  • Maps
  • Cars in Movies
  • Movies
  • Music
  • Musical Instrument
    • Violin
    • Guitar
    • Musical Instrument 2nd page
  • Pop Music
    • The Beatles
  • Poster
  • Sport
    • Sport Equipment
    • Sport Document
    • Sport Rewards and Medals
    • Sport Images before 1940
    • Sport Cards 1940-70
    • Modern Sport Cards
    • Baseball >
      • Babe Ruth
      • Baseball Bat
      • Baseball Uniform
    • Basketball
    • Ice Hockey
    • Sport Memorabilia 2nd page
    • Olympic Games
  • Origins of Sports
  • Historical Arms
    • Blade and Armour
    • Colt 1836-62
    • Later Colts
    • Winchester
    • Firearms - 2nd page
  • Toys and Carousels
    • Doll
  • Games
  • Stamps
    • World Stamps
    • US Stamps
  • Inventions
  • Instrument and Equipment
  • Sciences
    • Ancient Science
    • Sciences 1600-1800
    • Sciences from 1800
    • Astronomy
    • Physics
    • Medicine
    • Natural History
  • Whisky
  • Wine
  • Past Sales

An Astrolabe made in Cordoba

2/4/2017

 
The map of the respective positions of the stars is immutable although the absolute position varies with latitude, altitude and time. The position of the sun also meets strict rules. The astrolabe is an instrument of very high complexity which allows to correlate all these variables in measurements of great accuracy.

The astrolabe was described for the first time around 550 in Alexandria but its improvement is essentially the work of the Muslim astronomers. In the tenth century of our calendar an enthusiastic theorist listed about 1000 different uses of this truly universal instrument, in the etymological meaning of 'universal'.

The use of the astrolabe extends of course to all the Muslim world as far as Spain, but the most advanced theoretical and practical treatises remain the work of the astronomers of the Middle East.

The ibn al-Saffar brothers worked in Cordoba at the beginning of the 5th century of the Hegira. Ahmed is a very important teacher whose writings will be used for four centuries. Muhammad makes the instruments.

Three astrolabes signed by Muhammad ibn al-Saffar are known. The earliest, dated 411AH corresponding to 1020/1021 in our calendar, is estimated £ 300K for sale by Sotheby's in London on April 26, lot 170. It is a big piece 19 cm overall including the suspension loop.

This astrolabe is complete but not entirely original, for a valid reason. Indeed the rete which simulates the map of the sky becomes obsolete after a few decades due to the precession of the equinoxes. The ancient users were aware of this phenomenon and the rete of this instrument was changed in Ottoman Turkey. The position of one of its star pointers suggests a date around 1550 of our calendar for this replacement part.

The mater is the rear side of the instrument. This one is set to the 66° latitude corresponding to the longest day time known by the astronomers in the Antiquity. Six original double-sided removable plates are joined with the indication of latitudes and cities, inviting for a fabulous journey into the medieval Muslim world. From South to North : Yemen, Mecca, Medina, Cairo, Qairawan, Damascus, Malaga, Cordoba, Toledo, Zaragoza.

The link in Sotheby's tweet below leads to photos of this instrument after disassembly to explain the mater, the loop, the plates, the alidade or sight rule and the rede.

SOLD for £ 500K before fees

Subastan el astrolabio islámico y cordobés más antiguo https://t.co/SQsDNUBwa6

— abccordoba (@abccordoba) March 29, 2017

Anatomy of an Astrolabe:Unravel how this historic object from Muslim Spain allowed its beholder to gaze at the stars https://t.co/uT0QmHVZCM pic.twitter.com/Mk4qhH4VNH

— Sotheby's (@Sothebys) March 28, 2017
Ancient Science

Comments are closed.

    RSS Feed

    Archives

    February 2021
    January 2021
    December 2020
    November 2020
    October 2020
    September 2020
    August 2020
    July 2020
    June 2020
    May 2020
    April 2020
    March 2020
    February 2020
    January 2020
    December 2019
    November 2019
    October 2019
    September 2019
    August 2019
    July 2019
    June 2019
    May 2019
    April 2019
    March 2019
    February 2019
    January 2019
    December 2018
    November 2018
    October 2018
    September 2018
    August 2018
    July 2018
    June 2018
    May 2018
    April 2018
    March 2018
    February 2018
    January 2018
    December 2017
    November 2017
    October 2017
    September 2017
    August 2017
    July 2017
    June 2017
    May 2017
    April 2017
    March 2017
    February 2017
    January 2017
    December 2016
    November 2016
    October 2016
    September 2016
    August 2016
    July 2016
    June 2016
    May 2016
    April 2016
    March 2016
    February 2016
    January 2016
    December 2015
    November 2015
    October 2015
    September 2015
    August 2015
    July 2015
    June 2015
    May 2015
    April 2015
    March 2015
    February 2015
    January 2015
    December 2014
    November 2014
    October 2014
    September 2014
    August 2014
    July 2014

    by 'Pierre'

    Pierre Tavlitzki
    ArtHitParade author and editor

Powered by Create your own unique website with customizable templates.