The True Color of the Pleiades Nebulosity

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rnclark Senior Member • Posts: 2,803
The True Color of the Pleiades Nebulosity
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When I made this image of the Pleiades with my stretching program that supposedly maintains accurate color, I was surprised at the intensity of the blue.

So I conducted a study on the true color of the nebula based on calibrated spectra. The results are here:

The True Color of the Pleiades Nebulosity

The bottom line is the spectra of the Pleiades nebulosity show the nebula to be blue typical of high altitude clear daytime sky overhead.

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