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Plow_King t1_ixzkmib wrote

Reply to comment by Riegel_Haribo in New JWST image clearly shows dusty spiral arms of NGC 1566 (Credits: NASA / ESA / CSA / Judy Schmidt) by Busy_Yesterday9455

so it's not "real"?

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Riegel_Haribo t1_ixzlf4y wrote

It's as "real" as the half dozen that came before in /r/jameswebb.

.. Except with sharpening that surrounds stars with nebula-sucking black rings (greyscale is raw imaging): https://i.imgur.com/dBYr1Eb.gif

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Plow_King t1_ixzm4zt wrote

ok, that's kind of what i meant. thanks for the info and the new sub!

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RiseFit1638 t1_ixzsazw wrote

Are those planets really a deep blue? Or is that just added?

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Riegel_Haribo t1_ixztz2q wrote

Because James Webb Space Telescope observes infrared light, here, a very deep mid-infrared, it is impossible to tell the actual color they would appear. For those appearing quite red, it is likely objects (not planets) are invisible to visible light or even Hubble.

If the image was composed maintaining spectral accuracy and calibration of the different wavelengths assembled to make color, blue would imply that there is more shortwave light flux (the end closer to visible light) than seen in longer wavelengths..

The red giant Betelgeuse, for example, emits most of its light in visible red, not down into deep infrared, so it appears blue in a transposed spectrum.

Very distant galaxies might even appear purple (blue + red) or green, from addition of searing ultraviolet brightness and the dust swirling around young stars, shifted into infrared by the expansion of the universe.

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