The scientific papers of Sir William Huggins (1909)
Huggins, William, Sir, 1824-1910, Huggins, Lady, d. 1915 · London, W. Wesley and son · leaf 38
in these ring-brackets the axis ot the colli-mator can be brought into line with the optical axis of the telescope. Theother necessary adjustments are also provided for. By the large milled headon the top of the collimator, the spectroscope, as a whole, can be moved soas to bring the slit to the… … Fig. 8.—The Tulse Hill Spectroscope. changes of temperature, to be found at once after the necessary data have beenobtained. The adjustment of the collimator lens can be made by a smallermilled head. By an arrangement, which explains itself in the photograph, thecollimator and telescope can be…
Astronomy
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