Astrolabe Catalogue

 

Image of the tympan or plate - click for larger version
Tympan 5a
Latitude 38°0'
.

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 6°  Labelled every 6° with   (Abdjad) numerals Plain line.

Circles

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

Lines

Type Labelled Description
Meridian line
Horizon rectus
Unequal hours Numbered (Numbers in Numbers, engraved script) (Abdjad), Plain line style.
Equal hours from sunset Numbered (Numbers in Numbers, engraved script) (Abdjad), Dotted line style.

Inscriptions

Transcription Translation Type
العرض لح The latitude 38°. Latitude
ساعاته يد لح Hours 14h38m Hours of daylight
المشرق East Direction
المغرب West Direction
لمعرفت الغروب السهيل For knowing the setting of the Canopus Miscellaneous
لمعرفت الطلوع السهيل For knowing the rising of the Canopus Miscellaneous
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