Astrolabe Catalogue

Scales

Type	Range & Units	Numbered	Geometry	Location
Ecliptic	0 - 360 Degrees of ecliptic	Every 10	Ecliptic	ecliptic
Calendar	First day of month - Last day of month Days of year	Every 5 days and end of the month	Circular, eccentric	ecliptic
Right ascension	0 - 360 Degrees	Every 10	Circular, concentric	tropic of capricorn

Stars

There are 27 stars on the rete marked with engraved 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
Caph	Caph	8.0° of Aries	60°	engraved
β Ceti	Deneb Kaitos	10.0° of Aries	-19°	engraved
Schedir	Schedar	11.0° of Aries	54°	engraved
α Arietis	Hamal	2.0° of Taurus	20°	engraved
Aldebaran	Aldebaran	10.0° of Gemini	14°	engraved
Capella	Capella	18.0° of Gemini	44°	engraved
Rigel	Rigel	19.0° of Gemini	-10°	engraved
Bellatrix	Bellatrix	20.0° of Gemini	5°	engraved
Betelgeuse	Betelgeuse	28.0° of Gemini	6°	engraved
Sirius	Sirius	10.0° of Cancer	-17°	engraved
Procyon	Procyon	22.0° of Cancer	4°	engraved
Alphard	Alphard	10.0° of Leo	-9°	engraved
Dubhe	Dubhe	20.0° of Leo	60°	engraved
Merak	Merak	14.0° of Virgo	54°	engraved
Phagda	Phecda	1.0° of Libra	50°	engraved
Megrez	Megrez	6.0° of Libra	54°	engraved
Alioth	Alioth	16.0° of Libra	52°	engraved
Spica	Spica	22.0° of Libra	-11°	engraved
Mizar	Mizar	24.0° of Libra	54°	engraved
Benetnasch	Benetnasch	24.0° of Libra	46°	engraved
Arcturus	Arcturus	6.0° of Scorpio	18°	engraved
β Librae	Zubeneshamali	22.0° of Scorpio	-10°	engraved
Antares	Antares	8.0° of Sagittarius	-24°	engraved
Vega	Vega	8.0° of Capricorn	38°	engraved
Altair	Altair	25.0° of Capricorn	8°	engraved
Deneb	Deneb	11.0° of Aquarius	46°	engraved

Nut & Bolt

The rete is attached using a nut & bolt.