Date |
1687/8 (A.H. 1099) |
Maker |
‘Abdullah ibn Sāsī |
Place |
Morocco |
Material |
Brass |
Inventory no. |
45220 |
Acquisition |
Presented by Lewis Evans in
1924 |
The rete is of the maghribi (two knobs) type. The two
knobs are now missing.The zodiac on the rete is labelled:
الحمل , الثور , الجوزا , السرطان , الاسد , السنبله , الميزان
, العقرب , القوس , الجدي , الدلو , الحوت
Scales
Range & Units |
Numbered |
Geometry |
Location |
Ecliptic |
0 - 30 Degrees of ecliptic |
Not numbered |
Ecliptic |
ecliptic |
Stars
There are 25 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 |
بطن قيطوس |
Baten Kaitos |
25.0° of Aries |
-11° |
dagger |
غول |
Algol |
15.0° of Taurus |
40° |
dagger |
الدبران |
Aldebaran |
6.0° of Gemini |
14° |
dagger |
منكب |
Betelgeuse |
12.0° of Gemini |
7° |
dagger |
قدم الجوزا |
Rigel |
15.0° of Gemini |
-7° |
dagger |
عيوق |
Capella |
16.0° of Gemini |
45° |
dagger |
عبور |
Sirius |
6.0° of Cancer |
-13° |
dagger |
عميصا |
Procyon |
17.0° of Cancer |
8° |
dagger |
دبن |
Talitha Borealis |
12.0° of Leo |
46° |
dagger |
رجل |
Tania Australis |
21.0° of Leo |
42° |
dagger |
قلب الاسد |
Regulus |
25.0° of Leo |
12° |
dagger |
جناح الغرب |
Gienah |
12.0° of Virgo |
-14° |
dagger |
الاعزل |
Spica |
20.0° of Libra |
-8° |
dagger |
الرامح |
Arcturus |
2.0° of Scorpio |
21° |
dagger |
فكى |
Alphecca |
23.0° of Scorpio |
30° |
dagger |
الحياه |
Unukalhai |
23.0° of Scorpio |
16° |
dagger |
قلب الغرب |
Antares |
9.0° of Sagittarius |
-22° |
dagger |
الحوا |
Rasalhague |
20.0° of Sagittarius |
12° |
dagger |
واقع |
Vega |
2.0° of Capricorn |
38° |
dagger |
الطاير |
Altair |
21.0° of Capricorn |
8° |
dagger |
دبن الجدى |
Deneb Algiedi |
25.0° of Capricorn |
-20° |
dagger |
دلفم |
Deneb Dulfim |
2.0° of Aquarius |
13° |
dagger |
ردف |
Deneb |
5.0° of Aquarius |
46° |
dagger |
منكب |
Scheat |
10.0° of Pisces |
27° |
dagger |
دنب قيطوس |
Deneb Kaitos |
0.0° of Pisces |
-8° |
dagger |
Horse Image:
Pin & Wedge
The rete is attached using a pin
& wedge.