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Inventory no. 43704 - Former Display Label

59
Indo-Persian (Mughal) ASTROLABE
A.H. 1053 = A.D. 1643/4

Signed, on the back, at the edge of the shadow-square, 'Work of the least of the servants, Muhammad Muqim b. Isà b. Allâh-dâd [or Ilâh-dâd] Humâyûn's astrolabist of Lahore', and dated, at the sides of the shadow-square 'In the Hijri year 1053', 'In the year of Alexander 1955', and, in a different hand, 'In the year 1221' (? H. = 1806/7). Brass. Diam.: 168 mm.

Rete for c.41 stars. 5 plates: a) latitudes 22° and 25°; b) latitude 23°, and a composite tablet for latitudes 0°, 72° and 90°; c) latitudes 27° and 32°; d) latitudes 36° and 40°; e) tablet of horizons of eastern type and tablet of ecliptical co-ordinates (i.e. for latitude 66°30'). On most of the tablets, azimuths are drawn above and below the horizon line, and there are lines representing Babylonian hours, in addition to the usual unequal-hour lines. In the mater are engraved the latitudes and longitudes of 120 places arranged according to 'climate'. On the back are a sine/cosine quadrant; the arcs of the signs of the zodiac, with graphs of the sun's meridian altitude throughout the year for latitudes 27° and 32°; a shadow-square (within which are astrological tables of the 28 lunar mansions and the limits and faces of the planets, and of triplicities); cotangent scales; and the usual scales of degrees. The alidade and horse are not original.

[IC 72; B-M: MHMD MQIM ISA 15]
Lewis Evans Collection

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