Astrolabe Catalogue

 

Small image of astrolabe rete separated from astrolabe. Click to enlarge.
Date ca. 1570
Place France (?)
Material Brass
Inventory no. 49726
Acquisition Presented by J. A. Billmeir in 1957
The rete is of the arsenius type. The zodiac on the rete is labelled: ARIES ♈ , TAVRVS ♉ , GEMINI ♊ , CANCER ♋ , LEO ♌ , VIRGO ♍ , LIBRA ♎ , SCORPIVS ♏ , SAGITTARIVS ♐ , CAPRICORNVS ♑ , AQVARIVS ♒ , PISCES ♓

Scales


Type Range & Units Numbered Geometry Location
Ecliptic 0 - 30 Degrees of ecliptic Every 10  Ecliptic ecliptic

Stars

There are 25 stars on the rete marked with flamant 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
Cauda Ceti 3 Deneb Kaitos 5.0° of Aries -21° flamant
Pectus Cassiopeæ 3 Schedar 13.0° of Aries 55° flamant
Venter Ceti 3 Baten Kaitos 24.0° of Aries -13° flamant
Oculus Tauri 1 Aldebaran 6.0° of Gemini 14° flamant
Hircus 2 Capella 12.0° of Gemini 45° flamant
Dexter humerus Orionis 1 Betelgeuse 23.0° of Gemini flamant
Canis maior 1 Sirius 6.0° of Cancer -16° flamant
Canicula 1 Procyon 18.0° of Cancer flamant
Cor leonis 1 Regulus 23.0° of Leo 14° flamant
Fundus Crateris 3 Alkes 4.0° of Virgo -17° flamant
Principiū caude Vrsæ ma 1 Alioth 2.0° of Libra 56° flamant
Spica Virginis 1 Spica 16.0° of Libra -10° flamant
Arcturus 1 Arcturus 3.0° of Scorpio 27° flamant
Sinister humerus Bootis 3 Seginus 7.0° of Scorpio 40° flamant
Corona septē 2 Alphecca 22.0° of Scorpio 28° flamant
Herculis caput 3 Rasalgethi 11.0° of Sagittarius 13° flamant
Ophiuchi caput 3 Rasalhague 20.0° of Sagittarius 12° flamant
Caput Draconis 3 Rastaban 21.0° of Sagittarius 53° flamant
Lyra 1 Vega 8.0° of Capricorn 41° flamant
Aquila 2 Altair 20.0° of Capricorn flamant
Cauda Capricorni 3 Deneb Algiedi 16.0° of Aquarius -19° flamant
Crus Aquarij 3 Skat 6.0° of Pisces -18° flamant
Crus Pegasi 2 Scheat 9.0° of Pisces 25° flamant
Humerus Pegasi 2 Markab 9.0° of Pisces 14° flamant
Vmbilicus Pegasi 2 Alpheratz 28.0° of Pisces 27° flamant

Horse Image:

astrolabe part (photo)

Pin & Wedge

The rete is attached using a pin & wedge. The wedge is a slotted washer, which slides onto a notch on the pin.
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