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Pictures from hubble
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Mike A
Subra
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Posted : Oct 11, 2004 19:51
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Spindrift
Spindrift
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1560
Posted : Oct 11, 2004 20:03
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I read that already.
And they do say that it's not necessarily what we would see with the human eye, and that the images is edited with software.
From the text on hubblesite:
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The colors in Hubble images, which are assigned for various reasons, aren't always what we'd see if we were able to visit the imaged objects in a spacecraft. We often use color as a tool, whether it is to enhance an object's detail or to visualize what ordinarily could never be seen by the human eye.
Creating color images out of the original black-and-white exposures is equal parts art and science.
We use color:
• To depict how an object might look to us if our eyes were as powerful as Hubble
• To visualize features of an object that would ordinarily be invisible to the human eye
• To bring out an object's subtle details.
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  (``·.¸(``·.¸(``·.¸¸.·`´)¸.·`´)¸.·`´)
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Mike A
Subra
Started Topics :
185
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Posted : Oct 11, 2004 20:17
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Who said it is what we would see with our own eyes?
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| We use color:
• To depict how an object might look to us if our eyes were as powerful as Hubble
• To visualize features of an object that would ordinarily be invisible to the human eye
• To bring out an object's subtle details. |
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What are you trying to say? I don't get it.
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Spindrift
Spindrift
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Posted : Oct 11, 2004 20:21
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In actual photos you don't artificially bring out sublte details or visualize features that can't be seen by the human eye.
Actual photographs depict what can be seen with the human eye.
The use of colors in a actual photograph is not "a mixture of art and science".
The colours appears on the film without using art.
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Pointy
Started Topics :
6
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278
Posted : Oct 11, 2004 20:35
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MikeA wrote:
Those pictures are actual photos. This is exactly like taking a picture of me and saying that this picture is a theory. Those pictures provide proof.
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Yeah, they are actual photos, editted and enhanced.
Mike, if I take a picture of you, put it into photoshop and give you blue eyes, because I think it brings out your beauty, is this picture then an "actual" photo of you? Could it be taken as a proof that you got blue eyes?
And EYB, I don´t think Spindrift is trying to proof anything "right", but trying to say, that there is no proof here, only speculations based on theories! "*´¨)
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(¸.·´ (¸.·` * Magic is believing in yourself, if you can do that, you can make anything happen. Johann Wolfgang von Goethe..·´¨` .¸¸.·´¨`» |
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Mike A
Subra
Started Topics :
185
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Posted : Oct 11, 2004 20:57
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But no one is trying to show how it will look to the eye!
Those colors are use to distinguish certain wavelengths within a single picture!
You can't see infrared, x-ray or gamma rays with the eye. So they are given colors within the visible range.
Some elements, such as hydrogen, carbon, etc etc glow in red. But there are minor differences in the red. You can't tell by looking at it with the naked eye which part is what. But when you colorize each wavelength to a different color, you can see those areas. It gives more detail so we can learn more about the object being photographed. So what if it looks nice? It means it has no scientifical value?
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Spindrift
Spindrift
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33
Posts :
1560
Posted : Oct 11, 2004 22:32
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Discussing if the pictures is just regular CCD images with filters at specific light frequencies or actually 'artisticly' edited is no point.
There is no actual photographs of invisible light. You do at least need to transform the colour information to the visible spectrum.
If you read what they say them self on the site I think it's quite clear that it's not "actual photos".
What do you think "which are assigned colors for various reasons" or "equal parts art and science" means?
It's no "art" involved in taking the filtered images and layer them into one.
Your'e not "assigning" colors in that case either.
Like I said, I saw a TV show where the NASA's 'artists' was editing a picture. He for sure wasn't just layering 2-3 images.
This is what Zoltan Levay, who leads a team of imaging specialists which operates Hubble and prepares most of the photographs says about if the pictures can be misleading:
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"You can definitely mislead," Levay said. "Mistakes get made. Science happens by mistakes being made. But those mistakes are corrected."
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Read this whole article about space and colour where i found the quote, it's really worth it:
http://www.space.com/scienceastronomy/astronomy/color_universe_020625-1.html
I at least found some facts that I found very intriguing in reading it.....10x guys for inspiring me to look more in to more facts about this 
Turns out that the universe was considered beige a few years ago, but the images and theories behind was discared, because 'Beige, however, turns out to be a near impossibility in the world of light emissions -- only reflections can really be beige".
So why can't it be reflections then??
That I still don't know after my research on the subject.....and no-one in this thread seems to have anything to confirm the well established "knowledge" that we live in a universe full of light emitting objects.
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Mike A
Subra
Started Topics :
185
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Posted : Oct 11, 2004 23:08
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I just think you're upset cause you can't see those cool things with your own eyes 
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Spindrift
Spindrift
Started Topics :
33
Posts :
1560
Posted : Oct 11, 2004 23:16
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Mike A
Subra
Started Topics :
185
Posts :
3954
Posted : Oct 11, 2004 23:28
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Yes I did.
Actually I think I've read every piece of text on www.space.com
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Dragongurl
IsraTrance Junior Member
Started Topics :
19
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623
Posted : Oct 14, 2004 12:52
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This site is one of the few that fills up my Bookmarks. I am so totally into my astronomy  Use my telescope as often as I can, looking for the unknown!!
One of my other favorites for all your star news: http://skyandtelescope.com
:: Life can be as bitter as dragon tears
But whether dragon tears are bitter or sweet
depends entirely on how each man perceives the taste :: |
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