• @[email protected]
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    206 months ago

    Is this in visible light or are there other spectrums involved? I m just wondering if this is real color.

      • @[email protected]
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        66 months ago

        That’s what I thought to. That’s why I’m wondering what spectrum this is in, or of it’s CGI/edit.

        • ℛ𝒶𝓋ℯ𝓃
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          6 months ago

          Hi, amateur citizen scientist here.

          James Webb space telescope has 2 major imagery instruments, and a couple others for alignment and spectrography. All these instruments are in varying portions of the infrared spectrum.

          When making an observation, JWST uses NIRCam, a near-infrared imager, to take a series of images. There are two identical sensors in NIRCam, which capture adjacent portions of the sky in both a short and a long IR channel. There are also two filter wheels that take the images with an array of slitless filters.

          Many images also use MIRI, a mid-infrared instrument that generally produces slightly less dazzling (but still amazing) pictures, but very valuable scientific data that allows us to see the most redshifted galaxies. MIRI also has an array of 9 filters. This instrument allows JWST to see farther into the universe than ever before.

          But this is only where observations begin. While terabytes of grayscale imagery and spectrographs are invaluable to scientific study, the public usually prefers more artistic presentations of humanity’s collective efforts. The image is still authentic - nothing is “edited” or “photoshopped” in the traditional sense. But it takes hours of painstaking work to “shift” the images from infrared into visible light.

          After the series of filtered grayscale images are colorized in a way that makes sense in visible light, they are still a series of separate images from monochrome IR filters. An analogy would be to take a long exposure picture with red, yellow, green, blue, purple, violet, and red filters. The images are then overlayed to create a composite, like what you see here. Sometimes MIRI images are added with low opacity to showcase the mid-IR whisps of “dust” in some nebulas (mostly glowing gasses and plasma), invisible to all previous telescopes.

          All the raw data from JWST is available as soon as it’s fully received and uploaded by NASA at the Mikulski Archive for Space Telescopes (MAST) run by the STScI, for both researchers and hobbyist like me. If you have a lot of storage space and some basic images processing skills (or are willing to spend an afternoon to learn), I highly recommend reading more about the process and trying it yourself.

          [Edited to fix broken links.]

          • @[email protected]
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            36 months ago

            This is an awesome explanation, that’s a really cool way to process an image. Thanks man, much appreciated.

    • Chemical Wonka
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      76 months ago

      In fact, Uranus is a pretty cold place its temperature is aroind 49 K (−224 °C; −371 °F)

        • Chemical Wonka
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          6 months ago

          Lol, My keyboard doesn’t have a corrector and English is not my native language. This explains a lot

          • @[email protected]
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            36 months ago

            What more could I expect from the Willy Wonka of chemicals? The methanol berries taste like *gags and dies*

            • @threelonmusketeers
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              36 months ago

              A little lick of methanol won’t kill you. You’ll “only” go blind.

            • Chemical Wonka
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              16 months ago

              This nickname has a dark history behind it but I laughed of your comment not gonna lie

  • don
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    186 months ago

    Hmmmm. Comment on the cool science bit or make an ass-related comment?

    [OBLIGATORY COMMENT REGARDING MY ASSHOLE LOL]

  • @[email protected]
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    136 months ago

    I checked the comments to make sure they are all lame, low-effort ass jokes. Yep, all is right with the world.

  • m3t00🌎OPM
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    106 months ago

    round trip would make a great vacation cruise