Astrolabe Catalogue


Small image of astrolabe rete separated from astrolabe. Click to enlarge.
Date 13th century
Place North Africa
Material Brass
Inventory no. 41122
Acquisition Bequeathed by T. G. Barnett in 1935
The rete is of the indicator-line (simple) type. There were originally four knobs for rotating the rete. Three of those knobs have been lost.The zodiac on the rete is labelled: حمل , ثور , جوزا , سرطان , اسد , سنبله , ميزان , عقرب , قوس , جدي , دلو , حوت


There are 29 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
قلب العقرب Antares pointer damaged pointer damaged dagger
النسر الطير Altair pointer damaged pointer damaged dagger
الردف Deneb pointer damaged pointer damaged dagger
بدن قيطوس Baten Kaitos 15.0° of Aries -19° dagger
الغول Algol 18.0° of Aries 39° dagger
الدبران Aldebaran 3.0° of Gemini 14° dagger
رجل الجوزا Rigel 14.0° of Gemini -8° dagger
العيوق Capella 16.0° of Gemini 42° dagger
منكب الجوزا Betelgeuse 22.0° of Gemini dagger
العبور Sirius 4.0° of Cancer -16° dagger
الغميصا Procyon 13.0° of Cancer dagger
يد الدب Talitha Borealis 1.0° of Leo 48° dagger
زبانا 2.0° of Leo 14° dagger
منير الشجاع Alphard 15.0° of Leo -7° dagger
رجل الدب Tania Borealis 17.0° of Leo 42° dagger
قلب الاسد Regulus 19.0° of Leo 16° dagger
فم الكاس Alkes 13.0° of Virgo -15° dagger
الاعزل Spica 18.0° of Libra -8° dagger
القايد Alkaid 21.0° of Libra 52° dagger
الرامح Arcturus 22.0° of Libra 19° dagger
عنق الحيه Unukalhai 5.0° of Scorpio dagger
الفكه Alphecca 7.0° of Scorpio 31° dagger
راس الحوا Rasalhague 18.0° of Sagittarius 14° dagger
الواقع Vega 11.0° of Capricorn 41° dagger
اصادر الجدى Deneb Algiedi 14.0° of Aquarius -19° dagger
نكب الفرس 29.0° of Aquarius dagger
؟؟؟؟ 29.0° of Aquarius dagger
الخضيب Caph 26.0° of Pisces 55° dagger
[سعنه هنظس السمالته] 27.0° of Pisces -10° dagger

Pin & Horse

The rete is attached using a pin & horse. Probably a replacement.
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