Note on the spectrum of Comet C, 1886

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1886
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Abstract
COMET C, 1886, presents to telescopic view, a faint oval of light about one and a half minutes in diameter.In the north proceeding quarter is a poorly defined condensation.Although well situated for observation, it is yet not especially suited for spectroscopic analysis j still out of curiosity the equatorial of the Yale Observatory was turned thereon.The result is not without interest: no less than seven loci of light present themselves, where three are usually seen.On account of the circumstances it is necessary to de• scribe somewhat in detail the apparatus and mode of observation.The comet's light focused upon the plane of the slit by the object glass of the equatorial (8 in.), and passing through the collimating lens falls upon a Rowland's flat grating, 14,347 lines to the inch, and is then focused for observation by a small telescope with low power eye-piece.The grating is fastened to an arc moved by a tangent screw, allowing the
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Authors O. T. Sherman
Journal american journal of science
Year 1886
DOI
10.2475/ajs.s3-32.188.157
URL
https://doi.org/10.2475/ajs.s3-32.188.157
Keywords Keywords not found

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