Astrolabe Catalogue

 

Image of the tympan or plate - click for larger version
Tympan 4a
Latitude 30°0'
This tympan is actually for slightly more than 30 degrees, probably closer to 31 degrees..

Almucantars

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

Azimuths

Divisions Labelled Style
Divided every 10°  Labelled every 10° with   (Abdjad) numerals Plain line.

Circles

Type Labelled Style Notes
Equator Plain line.
Tropic of Cancer Plain line.
Tropic of Capricorn Plain line.

Lines

Type Labelled Description
Unequal hours Numbered (None in None script) (Abdjad), Plain line style.
Equal hours from sunset Numbered (None in None script) (Abdjad), Dotted line style.
Equal hours from sunrise Numbered (None in None script) (Abdjad), Dotted line style.

Inscriptions

Transcription Translation Type
لعرض ل ع Latitude 30° Latitude
ساعاته يحج نخح Hours 13h 38m Hours of daylight
المشرق East Direction
المغرب West Direction
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