Astrolabe Catalogue


Small image of astrolabe rete separated from astrolabe. Click to enlarge.
Date 1789/90 (A.H. 1204)
Maker Sayyid ’Abd al-Baqi
Place Persia (?)
Material Brass
Inventory no. 50059
Acquisition Presented by J. A. Billmeir in 1957
The rete is of the foliate (single knob) type. One rotation knob on tropic of capricorn at the bottom. Counter-changed east-west line at the ecliptic.The zodiac on the rete is labelled: الحمل , الشور , الجوزا , السرطان , الاسد , السنبله , الميزان , العقرب , القوس , الجدي , الدلو , الحوت


Type Range & Units Numbered Geometry Location
Zodiacal signs N/A Zodiacal divisions, equal or unequal Every 6  Ecliptic ecliptic


There are 38 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
دنب القطس Deneb Kaitos 7.0° of Aries -19° foliate
غول Algol 3.0° of Taurus 39° foliate
قطس ?? 7.0° of Taurus foliate
صدر القطس 8.0° of Taurus -16° foliate
كف الجدما Menkar 9.0° of Taurus foliate
24.0° of Taurus -14° foliate
دبران Aldebaran 6.0° of Gemini 15° foliate
عيوق Capella 10.0° of Gemini 44° foliate
رجل يسرى Rigel 14.0° of Gemini -11° foliate
19.0° of Gemini foliate
رجل اليمنى 24.0° of Gemini -7° foliate
يد اليمنى Betelgeuse 25.0° of Gemini foliate
شعراى Sirius 6.0° of Cancer -16° foliate
شعراى شامي Procyon 20.0° of Cancer foliate
طرف السفينه 25.0° of Cancer -20° foliate
فرد الشجاعه Alphard 18.0° of Leo -16° foliate
قاعدة الباطيه 7.0° of Virgo -15° foliate
جناح الغرابه 28.0° of Virgo -14° foliate
9.0° of Libra 56° foliate
سمك اعزل Spica 10.0° of Libra -9° foliate
سماك رامح Arcturus 26.0° of Libra 23° foliate
فكه Alphecca 21.0° of Scorpio 27° foliate
عنق حيه Unukalhai 22.0° of Scorpio foliate
راس جاثيه Rasalgethi 17.0° of Sagittarius 16° foliate
عين ثوريه Aldebaran 18.0° of Sagittarius 50° foliate
راس حواه Rasalhague 20.0° of Sagittarius 11° foliate
واقع Vega 10.0° of Capricorn 39° foliate
منقار دجاجه Albireo 22.0° of Capricorn 24° foliate
طاير Altair 22.0° of Capricorn foliate
دنب دلفن Deneb Dulfim 3.0° of Aquarius foliate
دنب دجاجهن Deneb 12.0° of Aquarius 49° foliate
ذنب الجدي Deneb Algiedi 21.0° of Aquarius -16° foliate
فم فرس Enif 24.0° of Aquarius 10° foliate
ساق ساكب المء Skat 9.0° of Pisces -19° foliate
مكب فرس Scheat 12.0° of Pisces 24° foliate
14.0° of Pisces 29° foliate
بطن 24.0° of Pisces 24° foliate

Pin & Wedge

The rete is attached using a pin & wedge. Most likely a replacement.
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