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aspectarium: aide-memoire which depicts the astrologically significant angles (or aspects) between the planets.
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astrolabe: astronomical instrument based on a planispheric projection of the heavens, see article on the astrolabe.
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astrolabe quadrant: quadrant that has many of the lines and functions of the ordinary astrolabe, projected for a single latitude.
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astrolabum catholicum: type of universal astrolabe, see article on the astrolabe.
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astrological houses: 12-part division of the heavens centred on the celestial pole, also called 'houses of heaven', see article on the astrolabe.
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