AstrolabeInIslam

Astrolabes in Islam: 

Astrolabes in Islam A model of the universe you can hold in your hand. By Dr. Harold Williams http://montgomerycollege.edu/Departments/planet

Internet Astrolabe resources: 

Internet Astrolabe resources http://astrolabes.org Janus, Jim Morrison, best general source of astrolabe information on the net. The electric astrolabe a free download only works on Wintel machines. The best laminated in plastic plainspheric astrolabe. http://www.mathsyear2000.org/museum/floor2/gallery4/indastro/index.html Keith Powell's Java astrolabe.

Recently made Islamic Astrolabe: 

Recently made Islamic Astrolabe Dr. Hasan Bilani, University of Aleppo, Syria November 2000 It is not a reproduction of a specific instrument but is in the style of a typical, high quality Islamic astrolabe. It was designed using AutoCAD and was engraved by chemical milling. It required about two months to manufacture. It is made of brass and is about eight inches in diameter and 5.5 mm thick and weighs 900 gm. There are 23 stars precessed to the current epoch. There are six plates provided but only two can but only two can be held in the mater at a time. The quote from the Koran on the throne (kursi) is "…and by the stars (men) guide themselves".

Rete: 

Rete

Matter: 

Matter

Climate or tympanum, 1: 

Climate or tympanum, 1

Climate or tympanum, 2: 

Climate or tympanum, 2

Climate or tympanum, 3: 

Climate or tympanum, 3

Horizons Plate for casting Horoscopes: 

Horizons Plate for casting Horoscopes

Part of the Astrolabe: 

Part of the Astrolabe Rete, net in Latin, the star map, off axis circle the ecliptic (the zodiacal signs) Plates (climate or tympanum), latitude specific, horizon coordinate system, altitude and azimuth

Janus astrolabe rete: 

Janus astrolabe rete

Stereographic Projection of Rete: 

Stereographic Projection of Rete For a rete to represent the Northern hemisphere

North pole, equator, and tropics projection : 

North pole, equator, and tropics projection

Ecliptic projection: 

Ecliptic projection

Rete for 2800BCE: 

Rete for 2800BCE

Rete for 500BCE: 

Rete for 500BCE

Rete for 140: 

Rete for 140

Rete for 2000: 

Rete for 2000

Rete for 13400: 

Rete for 13400

Plate (climate or tympanium): 

Plate (climate or tympanium) Altitudes or almucanters Twilight Arcs, -6º Civil, -12º Nautical, -18º Astronomical Azimuths North 0º & 360º East 90º South 180º West 270º

Altitude Projections: 

Altitude Projections

Lines of equal Azimuth Projection: 

Lines of equal Azimuth Projection

Hour angle Projections: 

Hour angle Projections

Complete Climate Projection: 

Complete Climate Projection

Climate for 25 degrees: 

Climate for 25 degrees

Climate for 30 degrees: 

Climate for 30 degrees

Climate for 35 degrees: 

Climate for 35 degrees

Climate for 40 degrees: 

Climate for 40 degrees

Climate for 45 degrees: 

Climate for 45 degrees

Climate for 50 degrees: 

Climate for 50 degrees

Climate for 55 degrees: 

Climate for 55 degrees

Climate for 60 degrees: 

Climate for 60 degrees

Plate for 0 and 90 degrees: 

Plate for 0 and 90 degrees

Plate for ecliptic transformation: 

Plate for ecliptic transformation

Plate for all horizons in 5 degree increments: 

Plate for all horizons in 5 degree increments

Back of astrolabe: 

Back of astrolabe Highly variable But most had calendar and zodiac & angle measuring protractor Notice perihelion and aphelion and center of calendar & zodiac

Janus astrolabe the college edition: 

Janus astrolabe the college edition Set for July 25 at 10PM at Takoma Park, Latitude 38°58’.

Astrolabe styles in Islam: 

Astrolabe styles in Islam Persia http://en.wikipedia.org/wiki/Persia Iran Mashriq http://en.wikipedia.org/wiki/Mashriq Arabic Middle East Maghrib http://en.wikipedia.org/wiki/Maghreb North Africa Andalusia http://en.wikipedia.org/wiki/Andalusia Moorish Spain

    Astrolabes in Islam references: 

    Astrolabes in Islam references Islamic astronomy http://en.wikipedia.org/wiki/Islamic_astronomy Muslim astronomers http://en.wikipedia.org/wiki/Muslim_astronomers

Some Islamic Astronomers : 

Some Islamic Astronomers Abd Al-Rahman Al Sufi (December 7, 903 – May 25, 986) http://en.wikipedia.org/wiki/%27Abd_Al-Rahman_Al_Sufi Amazing treatise of 386 chapters presenting 1000 uses of the astrolabe

Astrolabes reaching the West: 

Astrolabes reaching the West Gerbert of A’urillac, Gerbert d'Aurillac, Pope Silvester II, (ca. 950 – May 12, 1003) http://en.wikipedia.org/wiki/Gerbert_of_Aurillac