Maghribi Astrolabium, Ca. 1722
Anonymous, North Africa
Maker:
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Antique copy after an original by Isa Ibn Allahdad. A heavy brass astrolabe from the Maghreb, dated ‘1135 AH’ (1722/23 CE). It includes six double-sided planispheric plates for different latitudes, showing the projection of stars onto a flat plane.
Heavily constructed in brass and bearing date ‘1135’ AH (1722/23 CE)
on the shaped throne, six double-sided
planispheric plates and fret-worked rete secured with stylised
‘horse’, the reverse etched with shadow square, calendar
and hour scales etc., unmarked alidade with sighting vanes,
the whole suspended from a hinged joint -- 45⁄8in. (11.8cm.)
diameter; mater 3⁄8in. (1cm.) thick
This astrolabe appears to be a near-faithful copy of the ‘Isa ibn
Allahdad’ astrolabe of Lahore, Pakistan contained in the Adler
Planetarium & Astronomy Museum, Chicago, Inv. No. A-79
(IC 1096). This is a little larger with a 7.in. (18.5cm.) diameter, 3/8in.
(1cm.) thick mater and is dated for 1013 (1605/05).