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Rosetta probe Philae just landed on Comet 67P

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  • #31
    i didnt watch the discovery channel program. did they have a camera going so the actual landing could be watch from the point of view of the probe
    WH

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    • #32
      Space poop man.

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      • #33
        All that money spent, yet they're too cheap too spring for a color camera...

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        • #34
          Space is drab - the moon is 500 shades of gray and black.

          Fun little fact - the Hubble Space Telescope and the color pics of nebulae? Those are colored up in post processing here on Earth. the pics are taken by black/white sensors and just run through a number of color filters. Its not entirely faked, just has the black and white variations amplified while infared and ultraviolet is nudged a bit into the visible spectrum.

          Voila - False-color images.

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          • #35
            Originally posted by Big A View Post
            All that money spent, yet they're too cheap too spring for a color camera...

            "They have color filters in front of the camera. A regular camera has red, green, and blue, over a portion of the pixels. This means they can only take pictures in one color per pixel, and resolution is limited in any particular color (empty spaces between colors).

            For a scientific camera they use a black and white CCD, so it captures all the light that hits it, and they spend more money to get a better quality CCD. Then they get the color filters and swap them out in the lens. This setup means they need less pixels on the CCD for the same quality picture. More importantly they are not limited to RGB. They have many color filters optimized for the spectral lines of various things. For Rosetta they got two cameras, one with 12 colors, and one with 14 colors. They can essentially get a 26 color picture of the comet which is way better than what an rgb camera can do. The downside is they need to take a picture of basically everything 26 times. That's the real downside here, but rocks don't move much so it's not a huge issue.

            So yes they can do color pictures, but it's done by taking 3 pictures and combining them on earth."

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