What is Digg?30 Comments
- Shogi, on 07/05/2008, -0/+50That's really amazing, I had no idea the process was that complex. Dugg, this is the kind of article I want to see on Digg.
- giant.robot, on 07/06/2008, -0/+8To get an idea of how Hubble images might look to the human eye (sans processing) look here: http://heritage.stsci.edu/2000/25/ngc7078supp.html
To answer your question specifically about the Eagle Nebula, the picture is referred to as "enhanced color" because it uses false color assignments to enhance details in the image. If you used natural color assignments the hydrogen and sulphur spectra would largely overlap as they are both fairly red and would drown out a lot of each other's detail. So in this composite hydrogen's spectra was shifted to green. If oxygen's spectra wasn't shifted you'd end up with the same problem as before, the two spectra would overlap and drown out each others details. Thus oxygen was shifted to blue. This allows for the final image to have a great deal of detail preserved. While enhanced color images do have some scientific use they're often used for promotional imagery since they're very visually appealing. Here's a good explanation on HubbleSite about different composite image types: http://hubblesite.org/gallery/behind_the_pictures/ ... - iamvahe, on 07/06/2008, -0/+7Anyone catch "When We Left Earth" on the discovery channel? Really great series. They talked about how the blurred images of Hubble almost ended NASA before the mission when they repaired it.
- DigitAl56K, on 07/06/2008, -1/+7Why did they assign blue to oxygen when they mark oxygen as green/yellow in the visible spectrum on slide 13? Okay, it's false color, but it would still be interesting to have the opportunity to actually see what the image would look like if you were actually peering into Hubble as you would a regular telescope.
- DigitAl56K, on 07/06/2008, -0/+5To be fair though, the only way to actually see that which is outside the visible spectrum is to map it into the visible spectrum. I would still like to see "natural" images side-by-side though.
- DrummerAndrew, on 07/06/2008, -0/+4Good thing they got that thing fixed. The recent stuff they've discovered seems to be getting the populace interested in space again. I'm all for it. People who say that this research is wasting money piss me off.
- ophello, on 07/06/2008, -1/+4@ michaelb323
its comments like that that remind me of the Digg I really hate - Wildthing, on 07/06/2008, -0/+2PHOTOSHOPPED!? Curse you, Hubble!
/joke - inactive, on 07/06/2008, -0/+2Wow, and here I am thinking all it takes is a camera attached to a telescope floating around in orbit to snap such beautiful photographs.
- ojasnet, on 07/06/2008, -0/+2From the early development stages to present, Hubble program costs each American less than a $1 per year. I agree - money well spent!
- bblande, on 07/06/2008, -0/+2Spelling Nazi does not like this headline.
- nolesfan247, on 07/06/2008, -0/+2Wow that was really interesting, I never really thought about how much work went into putting together one of those images...dugg.
- knol, on 07/06/2008, -0/+1neato
I always thought it took much more than just two images of each spectrum, in order to average out the noise. I kinda figured it would be in the 20-100 range. - DrummerAndrew, on 07/14/2008, -0/+1Did not know that. I'll throw down another $20 to keep this ***** up.
- sering, on 11/25/2008, -0/+1that's nice
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http://dianika.com/insurance/ - TightPants, on 07/06/2008, -0/+1Dugg. Articles like this now and again remind me of the Digg I really want.
- illt, on 07/06/2008, -0/+1i've always wondered how this was done. it's amazing how much noise is created by cosmic rays in space. Now i know why they can't just strap a conventional (canon/nikon) high-res consumer censor to a space craft.
i wish nasa would put up some of these images for people to take their own artistic and engineering approach at processing these images. - tomz17, on 07/06/2008, -0/+1Search for Hubble FITS files in google... I saw a few results pop up, along with something called FITS liberator that will allow you to open these up in photoshop.
If you want to do some of the more clever things described in the article, use either IDL or Matlab. Based on what I know about astronomers and the tools they are comfortable with, my guess is that most of the Hubble work is done in IDL. - ManicA, on 07/06/2008, -0/+1I don't understand how he managed to disagree and agree in the same sentence
- fas2, on 07/06/2008, -0/+1It is even the best thing I've seen in a very long time!
- homer082, on 07/06/2008, -0/+1Wow..4 cameras, 4 filters..and still tons of noise...Now I know why the hubble needs to be in space..Because of the tons of interference in space, how much more if it would have been if the telescope was in the ground..
- dreamlayers, on 07/06/2008, -0/+1I wonder if this is a true colour image: http://apod.nasa.gov/apod/ap970718.html
- dan0964, on 07/06/2008, -0/+1http://thepiratebay.org/tor/4241123/When_We_Left_E ...
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parts 4,5,6 not on TPB yet - SimpleAlex, on 01/12/2009, -0/+0Simulation pret immobilier
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From the article at: http://kristensraw.blogspot.com/
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Hmm. Apparently, I must learn photoshop. - pstroll, on 07/06/2008, -9/+1But it's not REAL! Hubble images (in fact most astrophotography) are just manipulated versions of reality. Enhancing that which is way outside the visible spectrum and transforming it into a pretty package for the populace.
- aer0sense, on 07/06/2008, -17/+4But can it run crysis?
- inactive, on 07/06/2008, -14/+0Now if it could only wash my laundry...
- MajorCrazy, on 07/06/2008, -28/+7This is a DIGG COMMENT SURVEY.
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