Astrolabe Catalogue


Small image of astrolabe rete separated from astrolabe. Click to enlarge.
Date ca. 1700
Maker Khalīl Muḥammad ibn Ḥasan ‘Alī
Place Iṣfahān
Material Brass
Inventory no. 42649
Acquisition Purchased from C. E. Ross in 1925
The rete is of the foliate (single knob) type. The zodiac on the rete is labelled: حمل , ثور , جوزا , سرطان , اسد , سنبل , ميزان , عقرب , قوس , جدي , دلو , حوت


Type Range & Units Numbered Geometry Location
Ecliptic 0 - 30 Degrees of ecliptic Every 6  Ecliptic ecliptic


There are 22 stars on the rete marked with bulb 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
ذنب القطس Deneb Kaitos 4.0° of Aries -14° bulb
صدر القطس 10.0° of Taurus -14° bulb
فم القطس Kaffaljidhm 13.0° of Taurus bulb
راس الغول Algol 13.0° of Taurus 42° bulb
عين الثور Aldebaran 6.0° of Gemini 19° bulb
عيوق Capella 12.0° of Gemini 50° bulb
رجل اليمنى Saiph 24.0° of Gemini -10° bulb
يد اليمنى Betelgeuse 27.0° of Gemini 11° bulb
شعراى يمانيه Sirius 9.0° of Cancer -12° bulb
شعراى شامي Procyon 22.0° of Cancer 12° bulb
فرد الشجع Alphard 15.0° of Leo -5° bulb
قاعدة الباطيه Alkes 10.0° of Virgo -13° bulb
جناح الغراب Gienah 29.0° of Virgo -14° bulb
سمك اعزل Spica 19.0° of Libra -7° bulb
سمك رامح Arcturus 2.0° of Scorpio 23° bulb
عنق الحيه Unukalhai 25.0° of Scorpio bulb
قلب الغرب Antares 4.0° of Sagittarius -22° bulb
راس الحوا Rasalhague 20.0° of Sagittarius 14° bulb
منقار الدجاجه Albireo 18.0° of Capricorn 27° bulb
نسر طاير Altair 24.0° of Capricorn bulb
فم الفرس Enif 10.0° of Aquarius bulb
ساق ساكب Skat 8.0° of Pisces -15° bulb

Horse Image:

astrolabe part (photo)

Pin & Horse

The rete is attached using a pin & horse.
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