a telescope mounting in which one axis of rotation (the polar axis) is aligned parallel to the Earth's axis and the other (the declination axis) is aligned at right angles to this axis, in the plane of the celestial equator, astronoomiariistade paigaldus ekvaatoriliste koordinaatide järgi nii, et teleskoobi üks telg on paralleelne Maa pöörlemisteljega ja teine sellega risti