The Astronomical Observatories of Jai Singh c25.3

c25.3

‘Abdal-Raḥmān b. ‘Omar, Abū’l-Ḥusain al-Ṣūfī (d. A. D. 1986) 5, 10, 88. Aberkas=Hipparchus 3. Abdul ‘Alī b. Muḥammad b. al-Ḥasan Niẓām al-Dīn al-Barjendī (c. A.D. 1524 b.) 40. Abjad notation 15, 97, 133. Abul Ḥasan. See al-Ḥasan b. ‘Alī b. ‘Omar al-Marrākoshī, Abū ‘Alī. Abu’l Wafā. See Muḥammad b. M. b. Jaḥyā Abu’l-Wefā’. Agra-yantra 47, 57. ahargaṇa 75. Āīn-i-akbarī 11, 45, 77, 128. Albīrūnī. See Muḥammad b. Aḥmad Abu’l Rīḥān. Albategnius. See Muḥammad b. Jābir b. Sinān al-Battānī. ‘Alī b. ‘Abdal-Raḥmān Abū’l Ḥasan ibn Jūnis (A.D. 959 d.) 87. ‘Alī b. Muḥammad al-Sayyid al-Sharīf al-Gurgānī (A.D. 1340-1414) 4, 77. Alfonsine tables 14. Alhidade 18, 26. Almagest 2, 23, 69, 81. Almucantarats 18, 19. Akbarnāma 11. Anaphorai 119. Angular calculations: not used by the Hindus 87. ‘ankabūt, ‘spider’: the ecliptic tablet of an astrolabe 18 seq. 20, 21. Aperture dial. See shashṭāṃśa yantra. Apollinaris 122. Arabic astronomy 80-83. Aranea. See ‘ankabūt. Armillary sphere 79-80, 82. Āryabhaṭa (A.D. 476 b.) 74, 76, 81, 143. Arya-paksha 76. Ārya-siddhānta 76. Arzachel. See Ibrāhīm b. Jaḥyā al-Naqqāṣ. Ascendant 37, 120. Ascensional differences 23. Asterisms. See Nakshatras and manzil. Astrolabe : 16 seq., 82-83, 87; cylindrical 37; linear 83; perfected by Muslims 17, 82; used by Jai Singh 12, 16, 86; works on 3, 142; Zarqālī 27 seq. Astrolabes: at British Museum 24; European 17; Hindu 16, 31-33; at Jaipur 16 seq.; at Kapūrthala 16. Astrolabium planisphaerum 17, 82. Astrological tables: 21, 23, 119 seq.; anaphorai 119; duodenaries 125, 126; faces 29, 123, 126; novenaries 124, 126; planetary domiciles 123, 125; septenaries 124, 126; terms 122, 125; trigons 23, 121-122, 125. Astrology 120. Avanti=Ujjain q. v. Azimuth instruments 19, 37-39, 43-44, 53, 57, 62-63.