A text-book of general astronomy : for colleges and scientific schools (1888)
Young, Charles A. (Charles Augustus), 1834-1908 · Boston ; London : Ginn & Company · leaf 208
the observer will see a spectrum with two brightlines, the lines being really nothing more than images of the slit. Iflight from a candle be admitted, there will be an infinite number ofthese slit-images, close packed, like the pickets in a fence, withoutinterval or break, and-we then get a… … Fig. 108. — The Teleepeclroscope. 313. Integrating and Analyzing Spectroscope. — If we simplydirect the collimator of a spectroscope towards a distant luminousobject, every part of the slit receives light from every part of theobject, so that in this case every elementary streak of the spectrum 196…
Astronomy
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