Astrolabe Catalogue

 

Small image of astrolabe rete separated from astrolabe. Click to enlarge.
Date 1350/1 (A.H. 751)
Place Persia (?)
Material Silver
Inventory no. 41106
Acquisition Purchased from Malcolm Gardner in 1955
The rete is of the foliate (single knob) type. The pointer for Vega is shaped like a birdThe zodiac on the rete is labelled: حمل , ثور , جوزا , شرطان , اسد , سنبله , ميزان , عقرب , قوس , جدى , دلو , حوت

Scales


Type Range & Units Numbered Geometry Location
Ecliptic 0 - 30 Zodiacal divisions, equal or unequal Not numberered  Ecliptic ecliptic

Stars

There are 21 stars on the rete marked with foliate pointers. Unless otherwise indicated the star name, mediation and declination are as marked/measured on the rete.
Click on the star name or modern star name to search for other astrolabes with the same star.
Star name
(on instrument)
Modern star
(if known)
Mediation Declination Pointer
?? 0.0° of Taurus 12° foliate
?? 16.0° of Taurus foliate
رجل جوزا Rigel 8.0° of Gemini -10° foliate
?? 11.0° of Gemini foliate
سمانيح Sirius 6.0° of Cancer -17° foliate
سانه Procyon 20.0° of Cancer foliate
فرد Alphard 14.0° of Leo -5° foliate
قلب اسد Regulus 26.0° of Leo 12° foliate
عزل Spica 18.0° of Libra -14° foliate
قاديه Alkaid 24.0° of Libra 52° foliate
ردف Arcturus 26.0° of Libra 21° foliate
حفه Alphecca 10.0° of Scorpio 19° foliate
قلب عقرب Antares 2.0° of Sagittarius -26° foliate
حوا Rasalhague 16.0° of Sagittarius 14° foliate
وسد Vega 7.0° of Capricorn 33° foliate
طر Altair 18.0° of Capricorn foliate
فم Enif 14.0° of Aquarius foliate
ذنب جدى Deneb Algiedi 19.0° of Aquarius -17° foliate
?? 4.0° of Pisces 19° foliate
خطب Caph 17.0° of Pisces 41° foliate
ذنب قطس Deneb Kaitos 22.0° of Pisces -11° foliate

Pin Image:

astrolabe part (photo)

Horse Image:

astrolabe part (photo)

Horse Image:

astrolabe part (photo)

Pin Image:

astrolabe part (photo)

Pin & Wedge

The rete is attached using a pin & wedge.
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