When you transit the telescope, you rotate the telescope about the
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Trunnion axis
ट्रूनियन अक्ष
Vertical axis
ऊर्ध्वाधर अक्ष
Optical axis of the telescope
दूरबीन का ऑप्टिकल अक्ष
Line of Collimation
समरेखण रेखा
Trunnion axis
ट्रूनियन अक्ष
Transiting : The process of turning the telescope in vertical plane through 180° about the trunnion axis or horizontal axis. It is also known as plunging or reversing.
Note :
Horizontal axis (or) Trunnion axis : Axis about which the telescope and vertical circle rotate in vertical plane.
Swinging the telescope : Process of turning the telescope in horizontal plane.
Changing face : Operation of bringing the face of the telescope from left to right and vice versa. It is done by transiting.
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