Astrolabe Catalogue

 

Image of the tympan or plate - click for larger version
Tympan 1b
Latitude 42°0'
A faint shadow from the rete can be seen on this side of the plate. It was a standard Hartmann-style rete. The star pointers arose from pierced bases; the ecliptic supports are offset and the characteristic joined pointer for the star Vega (cf. the photo in Webster, Western Astrolabes, p 53.

Almucantars

Divisions Labelled Style
Divided every 2° from 0° to 90° Labelled every 10° with   (Modern) numerals Plain line.

Azimuths

Divisions Labelled Style
Divided every 10°  Plain line.

Circles

Type Labelled Style Notes
Equator ARIES LIBRA (Latin in Square capitals script) Plain line.
Tropic of Cancer CANCER (Latin in Square capitals script) Plain line.
Tropic of Capricorn CAPRICORNVS (Latin in Square capitals script) Plain line.

Lines

Type Labelled Description
Meridian line
Horizon rectus
Crepuscule LINEA AVRORE (Latin in Square capitals script)
Unequal hours Numbered (Numbers in Numbers, stamped script) (Modern), Plain line style.
Horoscopic (great) houses Numbered (Numbers in Numbers, stamped script) (Modern), Plain line style.

Inscriptions

Transcription Translation Type
LATI, XLII Latitude 42° Latitude
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