Astrolabe Catalogue

 

Front of astrolabe without rete or plates. Click to enlarge
Date 1675/6 (A.H. 1086)
Maker Muḥammad Amīn
Place Persia
Material Brass
Inventory no. 35565
Acquisition Presented by J. A. Billmeir in 1957

Throne

The throne is of the indo-persian, engraved type . The throne is attached with a integrated base. The front and back of this throne are embossed with an ornate floral design..

Ring

The ring is of the ornate type (i.e. ornate ring, not simple). The joint is not connected.

Shackle

Shackle of the trefoil type. This trefoil is closed..

Mater

The mater and limb are of one-piece construction. The tab to hold the tympans in place is located at the bottom of the instrument, 180° from the throne.. Scales on the limb:
Type Range & Units Numbered Geometry Location
Degree 0 - 360 Degrees of arc Every 5 degrees Circular, concentric None

Womb


Contains a gazeteer.. The womb contains a gazetteer with coordinates for 27 cities:
City
(on instrument)
Translation
(when known)
Longitude Latitude Inhiraf Jihat
مكه Mecca 77°10 21°40 00
مدينه Medina 75°20 24°5 12°00
حله Hilla 79°00 32°00 12°00
كوفه Kufa 79°30 31°30 12°30
بغداد Baghdad 80°41 33°00 13°00
تبريز Tabriz 82°00 38°00 15°40
همدان Hamadan 83°00 35°10 ????
قزوين Qazvin 85°00 36°00 27°34
كشان Kashan 86°00 34°00 34°33
اصفهان Isfahan 86°40 32°?? 40°29
شيراز Shiraz 88°00 29°36 13°20
سمنان Semnan 88°00 36°00 34°38
يزد Yazd 89°00 32°00 48°27
استراباد Asterabad 89°35 36°50 18°47
سبزوار Sabzawar 91°30 36°05 44°46
طبس كيلك Tabas Kylek 92°00 33°00 53°02
مشهد مقدس Meshhad Muqaddas 92°30 37°00 41°00
تون Tun 92°30 34°30 50°24
نيشابور Nishapur 92°30 36°21 46°26
قاين Qayen 93°20 33°40 14°00
طبس صينا Tabas Sina 94°20 33°15 54°00
هراة Herat 94°20 34°35 53°14
سمرقند Samarqand 99°17 39°37 12°33
ملتان Multan 107°35 29°40 79°30
قنداهر Qandahar 107°40 33°00 75°10
كشمير Kashmir 108°00 35°00 71°51
اكرة ???? 104°00 27°13 91°00
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