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NASAWebb's profile
NASA Webb Telescope
NASA Webb Telescope
NASA Webb Telescope
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@NASAWebb

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NASA Webb TelescopeVerified account

@NASAWebb

NASA's James Webb Space Telescope will #UnfoldTheUniverse and show us things we've never seen before.

webb.nasa.gov
Joined April 2009

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    1. NASA Webb Telescope‏Verified account @NASAWebb Jun 29

      📷 This #NationalCameraDay, we're spotlighting the different cameras that will be helping Webb and @NASARoman uncover mysteries of our universe. So how do Webb's cameras compare to cameras in our daily lives? Thread 👇pic.twitter.com/sqBj7oFxji

      Webb team photographers Chris Gunn and Desiree Stover take a selfie in front of a gold-coated, hexagonal Webb mirror segment. Both are in cleanroom suits. Chris Gunn is holding the camera in one hand.
      The Webb telescope's MIRI instrument, with a blue light backdrop for artistic effect.
      The Webb telescope's NIRISS instrument, being examined by a group of cleanroom engineers and technicians
      The Webb telescope's NIRCam instrument, surrounded by cleanroom engineers and technicians.
      7 replies 73 retweets 394 likes
      Show this thread
    2. NASA Webb Telescope‏Verified account @NASAWebb Jun 29

      Webb is a heat seeker that will detect invisible infrared light, unlike our phone cameras, which photograph visible light. The cameras on Webb's NIRCam and NIRISS instruments will both see in the near-infrared range, while its MIRI instrument will take images in mid-infrared.pic.twitter.com/pvTMOx6t6E

      A comparison of two iconic "Pillars of Creation" images taken by the Hubble Space Telescope. A visible light version is on the left, while an infrared version is on the right. Notably, the infrared version allows us to see many more stars that would otherwise be hidden in gas and dust in visible light.
      Hubble
      5 replies 35 retweets 147 likes
      Show this thread
    3. NASA Webb Telescope‏Verified account @NASAWebb Jun 29

      You may have seen far-infrared cameras at your local museum. These cameras tend to be low-resolution and usually produce grainy images compared to Webb's near-infrared & mid-infrared cameras. For reference, Webb's NIRCam features detectors that each have about 4 million pixels!pic.twitter.com/ssF3hx7UFY

      Visible light image of a man with his arm in a trash bag (to demonstrate the differences between visible light and infrared images).
      Infrared image of the same man with his hand in a trash bag. The trash bag is hardly visible in this image because it is cool compared to the heat of the man's arm and hand. There is a gradient scale on the right to show that darker colors represent cooler temperatures, while warmer colors represent hotter temperatures.
      3 replies 12 retweets 70 likes
      Show this thread
    4. NASA Webb Telescope‏Verified account @NASAWebb Jun 29

      Because we can't see in infrared, Webb's images must be "translated" with color to differentiate between wavelengths of light. In this Spitzer infrared image, blue represents light at a wavelength of 3.6 microns. Green represents 8-micron light, and red is 24-micron light.pic.twitter.com/2uBaVFEOlF

      Spitzer Telescope image of the Horsehead Nebula. In visible-light images, the nebula has a distinctively dark and dusty horse-shaped silhouette, but when viewed in infrared light, dust becomes transparent and the nebula appears as a wispy arc. Here, blue represents light emitted at a wavelength of 3.6-microns, and cyan (blue-green) represents 4.5-microns, both of which come mainly from hot stars. Green represents 8-micron light and red represents 24-micron light. Relatively cooler objects, such as the dust of the nebulae, appear green and red.
      ExploreAstro at Caltech IPAC
      2 replies 25 retweets 99 likes
      Show this thread
      NASA Webb Telescope‏Verified account @NASAWebb Jun 29

      More about Webb's infrared detectors: https://go.nasa.gov/2TmylPo pic.twitter.com/0c3aexczAL

      James Webb Space Telescope Near Infrared Camera (NIRCam) detector with optical baffles removed. Light is collected in the purple mercury-cadmium-telluride film. The film is pixelated, although the individual pixels are far too small to be seen by eye here.
      10:40 AM - 29 Jun 2021
      • 13 Retweets
      • 93 Likes
      • banana catboy 🍌 moonmustang87 Victor Po Moon To Mars Philip Rupesh Kumar Sapan Mishra EMelyas Norbert Piske
      1 reply 13 retweets 93 likes
        1. NASA Webb Telescope‏Verified account @NASAWebb Jun 29

          NASA Webb Telescope Retweeted Nancy Grace Roman Space Telescope

          Learn more about @NASARoman's Wide Field Instrument, another infrared camera!https://twitter.com/NASARoman/status/1409922374112362498?s=20 …

          NASA Webb Telescope added,

          Nancy Grace Roman Space TelescopeVerified account @NASARoman
          It’s #CameraDay! The average cell phone camera is about 12-16 megapixels. Roman will be around 300 megapixels, allowing scientists to explore these images in GREAT detail. 📸✨ Learn more about the Wide Field instrument: https://go.nasa.gov/3AcOqYv 
          0 replies 2 retweets 33 likes
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