Astrolabe Catalogue

 

Date 1350/1 (A.H. 751)
Place Persia (?)
Material Silver
Inventory no. 41106
Acquisition Purchased from Malcolm Gardner in 1955
There are 3 plates with latitudes ranging from 20°0' to 32°0' .

Latitude 24°0'

Thumbnail image of the tympan or plate - click for more information
The projection is engraved so that it is inverted when the plate is placed within womb. Further, the plate is labelled 32° but is, in fact, engraved for ca. 24°. Inscribed:
Transcription Translation Notes Type
عرص لب Latitude 32° Latitude
ساعاته يد ح Hours 14h 08m Hours of daylight
المشرق East Direction
المغرب West Direction
More information

Latitude 28°0'

Thumbnail image of the tympan or plate - click for more information Thumbnail image of the tympan or plate - click for more information
The plate is labelled 32° but is, in fact, engraved for ca. 28°. Inscribed:
Transcription Translation Notes Type
عرص لب Latitude 32° Latitude
ساعاته يد كج Hours 14h 23m Hours of daylight
المشرق East Direction
المغرب West Direction
More information

Latitude N/A

Thumbnail image of the tympan or plate - click for more information
This plate contains 1 scales of the following type(s): Table of Horizons Inscribed:
Transcription Translation Notes Type
الشمالى Northern [declination] Scale label
الحونی Southern [declination] Most of these labels seem to have written the nonsense word: السوني. Scale label
More information

Latitude 20°0'

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The plate is labelled 29° but is, in fact, engraved for ca. 20°. Inscribed:
Transcription Translation Notes Type
عرص كط Latitude 29° Latitude
ساعاته يج يح Hours 13h 18m Hours of daylight
المشرق East Direction
المغرب West Direction
More information

Latitude 32°0'

Thumbnail image of the tympan or plate - click for more information
The plate is labelled 36° but is, in fact, engraved for ca. 32°. Inscribed:
Transcription Translation Notes Type
عرص لو Latitude 36° Latitude
ساعاته يد ل Hours 14h 30m Hours of daylight
المشرق East Direction
المغرب Westً Direction
More information

Latitude 30°0'

Thumbnail image of the tympan or plate - click for more information Thumbnail image of the tympan or plate - click for more information
The plate is labelled 36° but is, in fact, engraved for ca. 30°. The almucantars on this plate are particularly problematic, being both irregularly spaced and numbered. Inscribed:
Transcription Translation Notes Type
عرص لو Latitude 36° Latitude
ساعاته يد ب Hours 14h 02m Hours of daylight
المشرق East Direction
المغرب West Direction
More information
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