Astrolabe Catalogue

 

Small image of astrolabe rete separated from astrolabe. Click to enlarge.
Date 1565
Maker Regnerus Arsenius
Place Louvain
Material Gilt brass
Inventory no. 53558
Acquisition Lewis Evans Collection
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 55 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
Cassiopei: Schedar 3.0° of Aries 54° flamant
Cauda ceti ♄ 3 Deneb Kaitos 5.0° of Aries -20° flamant
Andro: ōmbili: ♀ 3 Mirach 11.0° of Aries 35° flamant
Venter ceti ♄ 3 Baten Kaitos 25.0° of Aries -11° flamant
Nares ceti ♄ 3 Menkar 12.0° of Taurus flamant
Meduse caput ♄ ♃ 2 Algol 13.0° of Taurus 40° flamant
Persei lat9 dex: ♄ ♀ 2 Mirfak 15.0° of Taurus 48° flamant
Oculus ♉ ♂ 1 Aldebaran 5.0° of Gemini 16° flamant
Hircius ♂ ☿ ♃ 1 Capella 13.0° of Gemini 46° flamant
Ori: sinis: pes ♃ ♄ 1 Rigel 16.0° of Gemini -9° flamant
Orionis sinister humer9 ♂ ☿ 2 Bellatrix 17.0° of Gemini flamant
Cinguil orio: media 2 Alnilam 21.0° of Gemini 0 flamant
Orio: dex: hume: ♂ 1 Betelgeuse 24.0° of Gemini flamant
Canis maior ♃ ♂ 1 Sirius 7.0° of Cancer -16° flamant
Caput ♊ antecedentis ♃ ♄ 2 Castor 15.0° of Cancer 33° flamant
Can ☿ ♂ 1 Procyon 18.0° of Cancer flamant
Hydre clara ♄ ♀ 2 Alphard 14.0° of Leo -5° flamant
Cor ♌ ♃ ♂ 1 Regulus 23.0° of Leo 14° flamant
Ursa maior ♂ 2 5.0° of Virgo 58° flamant
Ursa maior ♂ 2 7.0° of Virgo 64° flamant
Crateris funus ♀ ♄ 4 Alkes 7.0° of Virgo -16° flamant
Dorsum leonis ♄ 2 Zosma 10.0° of Virgo 22° flamant
Ursa maior ♂ 2 19.0° of Virgo 55° flamant
Cauda leonis ♂ 2 Denebola 20.0° of Virgo 17° flamant
Ursa maior ♂ 2 25.0° of Virgo 59° flamant
Corvi ala dextra ♄ ♂ 3 Gienah 1.0° of Libra -16° flamant
Ursa maior ♂ 2 8.0° of Libra 58° flamant
Ursa maior ♂ 2 15.0° of Libra 57° flamant
Spica virginis ♀ ☿ ♃ 1 Spica 17.0° of Libra -9° flamant
Ursa maior ♂ 2 23.0° of Libra 51° flamant
Arcturus ♃ ♂ 1 Arcturus 1.0° of Scorpio 22° flamant
Bootis sinister humerus ♃ ♄ 3 Seginus 4.0° of Scorpio 40° flamant
Lanx horae clarior ♃ ☿ 2 Zubeneshamali 4.0° of Scorpio 40° flamant
Corona septentri: ♀ ☿ 2 Alphecca 22.0° of Scorpio 28° flamant
Ophiuc: sinis: manis 3 Yed Prior 0.0° of Sagittarius -2° flamant
Cor ♍ ♃ 2 Antares 3.0° of Sagittarius -24° flamant
Ophiuc: genu sinis: 5.0° of Sagittarius -9° flamant
Caput herculis ♂ ☿ 3 Rasalgethi 14.0° of Sagittarius 15° flamant
Ophiuchi caput ♄ ♀ 2 Rasalhague 19.0° of Sagittarius 14° flamant
Ophiuchi gen dex: ♄ 3 Sabik 19.0° of Sagittarius -15° flamant
Ophiuchi ma: dex: 4 Celbalrai 25.0° of Sagittarius -10° flamant
Caput draconis ♄ ♂ 3 Rastaban 26.0° of Sagittarius 53° flamant
Lÿra ☿ ♀ 1 Vega 8.0° of Capricorn 38° flamant
Aquila ♂ ♃ 2 Altair 19.0° of Capricorn flamant
Cauda cÿgni Deneb 5.0° of Aquarius 44° flamant
Sinister hume ♒ ☿ 3 13.0° of Aquarius -8° flamant
Cephei dex hume: Alderamin 13.0° of Aquarius 61° flamant
Cauda ♑ ♄ ☿ 3 Deneb Algiedi 16.0° of Aquarius -18° flamant
Pegasi rictus ♂ ☿ 2 Enif 18.0° of Aquarius flamant
Dexter humer: ♒ ☿ ♃ 3 21.0° of Aquarius -3° flamant
Crus ♒ ☿ ♄ 3 Skat 5.0° of Pisces -17° flamant
Crus pegasi ♂ ♃ 2 Scheat 8.0° of Pisces 25° flamant
Pegasi humerus ♃ ☿ 2 Markab 9.0° of Pisces 13° flamant
Pegasi vmbili: Alpheratz 26.0° of Pisces 29° flamant
Ala pegasi ♂ ♃ 2 Algenib 29.0° of Pisces 13° flamant

Nut & Bolt

The rete is attached using a nut & bolt. A small pin extends from the head of the pin into the alidade. This pin prevents the pin from rotating freely.
MHS Home | Contact Us | ©2006 Museum of the History of Science