A text-book of general astronomy : for colleges and scientific schools (1888)
Young, Charles A. (Charles Augustus), 1834-1908 · Boston ; London : Ginn & Company · leaf 52
hange his position at all for differ-ent stars, but simply looks straight forward horizontally. It is veryconvenient and rapid in actual work, but the observations require aconsiderable correction for flexure of the axis. 60. Adjustments. — (1) Focus and vertically of wires. (2) Collimation.(3)… … Fig. 18. —A 3-inch Transit, constructed by Fauth & Co. for the Princeton Observatory. or pushed in until the wires appear perfectly sharp, and then the instrumentis directed to a star or to some distant object (not less than a mile away),and without disturbing the eye-piece, the sliding-tube,…
Astronomy
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