Astrolabe Catalogue


Small image of astrolabe rete separated from astrolabe. Click to enlarge.
Date early 10th century
Place Syria (?)
Inventory no. 48470
Acquisition Presented by J. A. Billmeir in 1957
The rete is of the indicator-line (simple) type. The rete has a single tab for rotating it, cf. MHS 47632. Above each Arabic word a later owner has written the corresponding Armenian translation.The zodiac on the rete is labelled: الحمل , الثور , الجوزا , السرطان , الاسد , السنبله , الميزان , العقرب , القوس , الجدي , الدلو , السمكه


There are 17 stars on the rete marked with dagger 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
الدبران Aldebaran 24.0° of Aries 13° dagger
راس الغول Algol 0.0° of Taurus 37° dagger
العيوق Capella 28.0° of Taurus 46° dagger
رجل الجوزا Rigel 8.0° of Gemini -11° dagger
منكب الجوزا Betelgeuse 15.0° of Gemini dagger
اليمانيه Sirius 29.0° of Gemini -16° dagger
الساميه Procyon 9.0° of Cancer dagger
قلب الاسد Regulus 14.0° of Leo 20° dagger
رامح Arcturus 21.0° of Libra 25° dagger
الفكه Alphecca 14.0° of Scorpio 31° dagger
قلب العقرب Antares 23.0° of Scorpio -24° dagger
راس الحوا Rasalhague 12.0° of Sagittarius 12° dagger
الواقع Vega 1.0° of Capricorn 40° dagger
الطاير Altair 13.0° of Capricorn dagger
الدجاجه Deneb 0.0° of Aquarius 43° dagger
منكب الفرس Scheat 0.0° of Pisces 19° dagger
كف الخضيب Caph 23.0° of Pisces 53° dagger
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