Astrolabe Catalogue


Small image of astrolabe rete separated from astrolabe. Click to enlarge.
Date 1728/9 (A.H. 1141)
Maker Muḥammad ibn Aḥmad al-Baṭṭuṭī
Place North Africa
Material Brass
Inventory no. 52713
Acquisition Presented by Lewis Evans in 1924
The rete is of the maghribi (four knobs) type. The zodiac on the rete is labelled: الحمل , الثور , الجوزا , السرطان , الاسد , السنبله , الميزان , العقرب , القوس , الجدي , الدلو , الحوت


Type Range & Units Numbered Geometry Location
Ecliptic 0 - 30 Degrees of ecliptic Not numbered  Ecliptic ecliptic


There are 25 stars on the rete marked with hook 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
بطن قيطوس Baten Kaitos 18.0° of Aries -13° hook
راس الغول Algol 18.0° of Taurus 42° hook
الذبران Aldebaran 8.0° of Gemini 16° hook
قدم الجوزا Rigel 10.0° of Gemini -7° hook
عيوق Capella 14.0° of Gemini 42° hook
منكب الجوزا Betelgeuse 27.0° of Gemini hook
العبور Sirius 8.0° of Cancer -17° hook
الغميصا Procyon 21.0° of Cancer hook
يد الدب Talitha Borealis 7.0° of Leo 48° hook
رجل الدب Tania Australis 24.0° of Leo 39° hook
الغرب Gienah 15.0° of Virgo -13° hook
الاعزل Spica 18.0° of Libra -7° hook
الرامح Arcturus 4.0° of Scorpio 19° hook
عنق الحيه Unukalhai 22.0° of Scorpio 18° hook
فكه Alphecca 25.0° of Scorpio 27° hook
قلب العقرب Antares 8.0° of Sagittarius -24° hook
راس الحوا Rasalhague 22.0° of Sagittarius hook
[no name] 28.0° of Sagittarius hook
واقع Vega 2.0° of Capricorn 40° hook
الطاير Altair 22.0° of Capricorn hook
دبن الجدى Deneb Algiedi 4.0° of Aquarius -20° hook
الدلفين Deneb Dulfim 7.0° of Aquarius 24° hook
ردف Deneb 8.0° of Aquarius 45° hook
دنب قيطوس Deneb Kaitos 6.0° of Pisces -13° hook
منكب الفرص Scheat 14.0° of Pisces 27° hook

Horse Image:

astrolabe part (photo)

Pin & Wedge

The rete is attached using a pin & wedge.
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