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                           Astronomy Picture of the Day   
      
       Discover the cosmos! Each day a different image or photograph of our   
         fascinating universe is featured, along with a brief explanation   
                       written by a professional astronomer.   
      
                                   2022 July 18   
      
                  Stephan's Quintet from Webb, Hubble, and Subaru   
         Image Credit: Webb, Hubble, Subaru; NASA, ESA, CSA, NOAJ, STScI;   
                      Processing & Copyright: Robert Gendler   
      
      Explanation: OK, but why can't you combine images from Webb and Hubble?   
      You can, and today's featured image shows one impressive result.   
      Although the recently launched James Webb Space Telescope (Webb) has a   
      larger mirror than Hubble, it specializes in infrared light and can't   
      see blue -- only up to about orange. Conversely, the Hubble Space   
      Telescope (Hubble) has a smaller mirror than Webb and can't see as far   
      into the infrared as Webb, but can image not only blue light but even   
      ultraviolet. Therefore, Webb and Hubble data can be combined to create   
      images across a wider variety of colors. The featured image of four   
      galaxies from Stephan's Quintet shows Webb images as red and also   
      includes images taken by Japan's ground-based Subaru telescope in   
      Hawaii. Because image data for Webb, Hubble, and Subaru are made freely   
      available, anyone around the world can process it themselves, and even   
      create intriguing and scientifically useful multi-observatory montages.   
      
                     Stephan's Quintet from just: Webb, Hubble   
                       Tomorrow's picture: half star cluster   
        __________________________________________________________________   
      
          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
               NASA Official: Phillip Newman Specific rights apply.   
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                         A service of: ASD at NASA / GSFC   
                                & Michigan Tech. U.   
      
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