Elementary treatise on physics, experimental and applied : for the use of colleges and schools (1906)
Ganot, A. (Adolphe), 1804-1887, Atkinson, Edmund, 1831-1901, Reinold, A. W. (Arnold William), 1843-1921 · New York : Wood · leaf 632
collimation, of the telescope. The cross wires are focusedby moving the eyepiece with regard to them, and the distant object is thenfocused by moving the tube (by rack and pinion) containing the eyepieceand cross wires to or from the object-glass. The cross wires must besituated exactly where ha^… … Iig. 596 effected by means of two convex lenses, P and Q (fig. 596), placed betweenthe object-glass M and the eyepiece N (fig. 593). The object-glass beingsupposed to be on the left of fig. 596, an inverted and small image of a 608] Galileos Telescope 615 distant object AB is formed at ba. The…
Physics
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