Quote by Ken M. Harrison

“prominent lines in the star’s spectrum these will show up. Likewise, if there is a planetary nebula or a bright emission nebula in the field these will only show as small points (due to the fine emission lines of the gases involved) rather than a spread out spectrum. This makes the grating a handy…” quote by Ken M. Harrison — Download Open image

““prominent lines in the star’s spectrum these will show up. Likewise, if there is a planetary nebula or a bright emission nebula in the field these will only show as small points (due to the fine emission lines of the gases involved) rather than a spread out spectrum. This makes the grating a handy tool for finding faint planetary nebula. (See Chap. 7 for more detail.)””

Ken M. Harrison

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