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Most of the released Hubble photographs have been given artificial colors. This one is no exception. It is still a beauty. http://www.geocities.com/lilmacumd/escape.html
From what I understand they are as black and white as the stars we normally see. The Stellar Eggs, [stsci.edu] for example are awesome in appearance but if you took away the false coloring you end up looking at a fuzzy muddle of greys. [stsci.edu]
Oh, no. They really have colors. You get the images from the CCDs in black and white because you have to take one expose through each filter (which is then just a map of intensity at that waveband). But you then add the images to get color.
HST images (as well as other telescopes's outputs) tend to be false colored for two reasons:
1. Because stretching the color tables often brings out subtle details. You can see this is a true and stretched image of Jupiter, for example.
2. Many (most maybe even) HST images include wavelengths that we can't actually see, into the IR and UV. If you want to see those wavelengths, you'll have to false color.
I do sort of wish that they'd always include a little note in the captions stating that the color tables have been stretched or otherwise manipulated. But they seldom do. It's just a dream I have.
The
Fast
Facts [stsci.edu]
page says what wavelengths are used in this image.
H-alpha and N II are both red,
so they probably mapped one of those to green.
Could we please refrain from plagiarizing titles? Admittedly this is not as bad as ripping article summaries, but still doesn't sit right.
Very neat picture in any case.
Great picture, now can we see it in true colors (Score:1)
Re:Great picture, now can we see it in true colors (Score:1)
Mmm.. Galactic donut..
black and white? (Score:1)
Re:black and white? (Score:1)
Re:black and white? (Score:4, Informative)
HST images (as well as other telescopes's outputs) tend to be false colored for two reasons:
1. Because stretching the color tables often brings out subtle details. You can see this is a true and stretched image of Jupiter, for example.
2. Many (most maybe even) HST images include wavelengths that we can't actually see, into the IR and UV. If you want to see those wavelengths, you'll have to false color.
I do sort of wish that they'd always include a little note in the captions stating that the color tables have been stretched or otherwise manipulated. But they seldom do. It's just a dream I have.
Re:black and white? (Score:2)
Re:black and white? (Score:1)
Re:Great picture, now can we see it in true colors (Score:1, Informative)
Humbling... (Score:2)
knee nebula (Score:1)
IC 4406? naHH... don't like it..
I think it looks like a human knee...
.......
maybe grandmas knee..
...
lets call it that:
grandmas knee nebula
Re:knee nebula (Score:1)
Detached floating space retina that looks like grandma's knee nebula
That's catchy!
Story titles (Score:3, Insightful)
Itsa Fake! (Score:2)