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The New Coffee Room

  1. TNCR
  2. General Discussion
  3. James Webb Space Telescope Launch Update

James Webb Space Telescope Launch Update

Scheduled Pinned Locked Moved General Discussion
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  • George KG Offline
    George KG Offline
    George K
    wrote on last edited by George K
    #29

    "Let's align the mirrors."

    https://blogs.nasa.gov/webb/2022/02/11/photons-received-webb-sees-its-first-star-18-times/

    image.png

    The team’s challenge was twofold: confirm that NIRCam was ready to collect light from celestial objects, and then identify starlight from the same star in each of the 18 primary mirror segments. The result is an image mosaic of 18 randomly organized dots of starlight, the product of Webb’s unaligned mirror segments all reflecting light from the same star back at Webb’s secondary mirror and into NIRCam’s detectors.

    What looks like a simple image of blurry starlight now becomes the foundation to align and focus the telescope in order for Webb to deliver unprecedented views of the universe this summer. Over the next month or so, the team will gradually adjust the mirror segments until the 18 images become a single star.

    “The entire Webb team is ecstatic at how well the first steps of taking images and aligning the telescope are proceeding. We were so happy to see that light makes its way into NIRCam,” said Marcia Rieke, principal investigator for the NIRCam instrument and regents professor of astronomy, University of Arizona.

    Link to video

    "Now look here, you Baltic gas passer... " - Mik, 6/14/08

    The saying, "Lite is just one damn thing after another," is a gross understatement. The damn things overlap.

    1 Reply Last reply
    • taiwan_girlT Offline
      taiwan_girlT Offline
      taiwan_girl
      wrote on last edited by
      #30

      cool stuff!!

      1 Reply Last reply
      • CopperC Offline
        CopperC Offline
        Copper
        wrote on last edited by Copper
        #31

        Webb fully aligned! See the new test images

        https://earthsky.org/space/webb-telescope-aligned-new-test-images/

        https://www.space.com/james-webb-space-telescope-commissioning-update-may-2022

        1 Reply Last reply
        • CopperC Offline
          CopperC Offline
          Copper
          wrote on last edited by
          #32

          Countdown to first images

          Now 16 days 20 hours

          https://www.jwst.nasa.gov/content/webbLaunch/countdown.html

          1 Reply Last reply
          • CopperC Offline
            CopperC Offline
            Copper
            wrote on last edited by
            #33

            Now 11 days 13 hours

            https://arstechnica.com/science/2022/06/nasa-teases-extraordinary-images-captured-by-its-webb-telescope/

            NASA scientists say images from the Webb telescope nearly brought them to tears

            Deep field images of the universe, exoplanet atmospheres, and more to be unveiled.

            NASA said it plans to release several images beginning at 10:30 am ET (14:30 UTC) on July 12, the result of Webb's "first light" observations.

            1 Reply Last reply
            • George KG Offline
              George KG Offline
              George K
              wrote on last edited by
              #34

              I read a "teaser" interview with one of the NASA scientists. They said the images almost brought them to tears.

              "Now look here, you Baltic gas passer... " - Mik, 6/14/08

              The saying, "Lite is just one damn thing after another," is a gross understatement. The damn things overlap.

              89th8 1 Reply Last reply
              • George KG George K

                I read a "teaser" interview with one of the NASA scientists. They said the images almost brought them to tears.

                89th8 Offline
                89th8 Offline
                89th
                wrote on last edited by
                #35

                @George-K said in James Webb Space Telescope Launch Update:

                I read a "teaser" interview with one of the NASA scientists. They said the images almost brought them to tears.

                That's because they are staring at the sun. They should stop that.

                1 Reply Last reply
                • CopperC Offline
                  CopperC Offline
                  Copper
                  wrote on last edited by Copper
                  #36

                  5 days 22 hours now

                  Tuesday July 12, 2022 10:30am EDT (14:30 GMT)

                  Find them here: https://www.nasa.gov/webbfirstimages

                  1 Reply Last reply
                  • George KG Offline
                    George KG Offline
                    George K
                    wrote on last edited by
                    #37

                    "Now look here, you Baltic gas passer... " - Mik, 6/14/08

                    The saying, "Lite is just one damn thing after another," is a gross understatement. The damn things overlap.

                    1 Reply Last reply
                    • CopperC Offline
                      CopperC Offline
                      Copper
                      wrote on last edited by
                      #38

                      Stephan’s Quintet (galaxy group, 290 million lyr)

                      As seen from Hubble

                      The comparison will be interesting

                      d54da221-9a4a-47eb-8a7a-e889ceab770f-image.png

                      https://hubblesite.org/contents/media/images/2009/25/2606-Image.html

                      KlausK 1 Reply Last reply
                      • CopperC Copper

                        Stephan’s Quintet (galaxy group, 290 million lyr)

                        As seen from Hubble

                        The comparison will be interesting

                        d54da221-9a4a-47eb-8a7a-e889ceab770f-image.png

                        https://hubblesite.org/contents/media/images/2009/25/2606-Image.html

                        KlausK Offline
                        KlausK Offline
                        Klaus
                        wrote on last edited by
                        #39

                        @Copper said in James Webb Space Telescope Launch Update:

                        The comparison will be interesting

                        I have no clue about astronomy, but I'd guess that in some ways the two aren't comparable since they deal, AFAIK, with very different parts of the light spectrum.

                        1 Reply Last reply
                        • CopperC Offline
                          CopperC Offline
                          Copper
                          wrote on last edited by
                          #40

                          Link to video

                          Link to video

                          1 Reply Last reply
                          • 89th8 Offline
                            89th8 Offline
                            89th
                            wrote on last edited by
                            #41

                            c720d280-a6e0-4bd7-8ba8-0ddc3ba68871-image.png

                            1 Reply Last reply
                            • CopperC Offline
                              CopperC Offline
                              Copper
                              wrote on last edited by
                              #42

                              Mr. Biden gave us a sneak peak today

                              https://www.nasa.gov/webbfirstimages

                              This first image from NASA’s James Webb Space Telescope is the deepest and sharpest infrared image of the distant universe to date. Known as Webb’s First Deep Field, this image of galaxy cluster SMACS 0723 is overflowing with detail. Thousands of galaxies – including the faintest objects ever observed in the infrared – have appeared in Webb’s view for the first time. This slice of the vast universe covers a patch of sky approximately the size of a grain of sand held at arm’s length by someone on the ground.

                              alt text

                              George KG taiwan_girlT Catseye3C 4 Replies Last reply
                              • CopperC Copper

                                Mr. Biden gave us a sneak peak today

                                https://www.nasa.gov/webbfirstimages

                                This first image from NASA’s James Webb Space Telescope is the deepest and sharpest infrared image of the distant universe to date. Known as Webb’s First Deep Field, this image of galaxy cluster SMACS 0723 is overflowing with detail. Thousands of galaxies – including the faintest objects ever observed in the infrared – have appeared in Webb’s view for the first time. This slice of the vast universe covers a patch of sky approximately the size of a grain of sand held at arm’s length by someone on the ground.

                                alt text

                                George KG Offline
                                George KG Offline
                                George K
                                wrote on last edited by
                                #43

                                @Copper said in James Webb Space Telescope Launch Update:

                                Mr. Biden gave us a sneak peak today

                                That's a lot of galaxies.

                                A whole lot.

                                "Now look here, you Baltic gas passer... " - Mik, 6/14/08

                                The saying, "Lite is just one damn thing after another," is a gross understatement. The damn things overlap.

                                LuFins DadL 1 Reply Last reply
                                • CopperC Copper

                                  Mr. Biden gave us a sneak peak today

                                  https://www.nasa.gov/webbfirstimages

                                  This first image from NASA’s James Webb Space Telescope is the deepest and sharpest infrared image of the distant universe to date. Known as Webb’s First Deep Field, this image of galaxy cluster SMACS 0723 is overflowing with detail. Thousands of galaxies – including the faintest objects ever observed in the infrared – have appeared in Webb’s view for the first time. This slice of the vast universe covers a patch of sky approximately the size of a grain of sand held at arm’s length by someone on the ground.

                                  alt text

                                  taiwan_girlT Offline
                                  taiwan_girlT Offline
                                  taiwan_girl
                                  wrote on last edited by
                                  #44

                                  @Copper said in James Webb Space Telescope Launch Update:

                                  Mr. Biden gave us a sneak peak today

                                  Wow amazing stuff!!

                                  1 Reply Last reply
                                  • markM Offline
                                    markM Offline
                                    mark
                                    wrote on last edited by
                                    #45

                                    It's a giant leap forward in resolution and light gathering power.

                                    The level of detail in the small galaxies, and the blatantly obvious gravitational lensing, has me very impressed and excited about what we are going to discover with this telescope.

                                    I mean seeing friggin dust lanes and spiral arms, in galaxies that far away, is just incredible.

                                    markM 1 Reply Last reply
                                    • markM mark

                                      It's a giant leap forward in resolution and light gathering power.

                                      The level of detail in the small galaxies, and the blatantly obvious gravitational lensing, has me very impressed and excited about what we are going to discover with this telescope.

                                      I mean seeing friggin dust lanes and spiral arms, in galaxies that far away, is just incredible.

                                      markM Offline
                                      markM Offline
                                      mark
                                      wrote on last edited by
                                      #46

                                      It's a shame we have to put up with the diffraction spikes from the spider vanes. Hubble has the same issue.

                                      No practical way to get rid of them. Hauling a 21 foot diameter refactor into space would not work very well. lol

                                      1 Reply Last reply
                                      • CopperC Copper

                                        Mr. Biden gave us a sneak peak today

                                        https://www.nasa.gov/webbfirstimages

                                        This first image from NASA’s James Webb Space Telescope is the deepest and sharpest infrared image of the distant universe to date. Known as Webb’s First Deep Field, this image of galaxy cluster SMACS 0723 is overflowing with detail. Thousands of galaxies – including the faintest objects ever observed in the infrared – have appeared in Webb’s view for the first time. This slice of the vast universe covers a patch of sky approximately the size of a grain of sand held at arm’s length by someone on the ground.

                                        alt text

                                        George KG Offline
                                        George KG Offline
                                        George K
                                        wrote on last edited by George K
                                        #47

                                        @Copper said in James Webb Space Telescope Launch Update:

                                        Mr. Biden gave us a sneak peak today

                                        alt text

                                        Here's the same region as taken by Hubble.

                                        image.jpeg

                                        Side by side:

                                        Screen Shot 2022-07-11 at 8.49.46 PM.png

                                        "Now look here, you Baltic gas passer... " - Mik, 6/14/08

                                        The saying, "Lite is just one damn thing after another," is a gross understatement. The damn things overlap.

                                        1 Reply Last reply
                                        • CopperC Offline
                                          CopperC Offline
                                          Copper
                                          wrote on last edited by Copper
                                          #48

                                          The picture on the right is better.

                                          Billions of dollars better?

                                          I can't say, because I'm sure I don't really understand how to compare them.

                                          They are close enough that I believe they are the same subject.

                                          EDIT: I found this comment, I haven't verified it

                                          The fact that hubble captured better looking deep fields is irrelevant, what matters is that this is the same piece of sky, Webb on the left in 12 hours of exposure, Hubble on the right in weeks of exposure!

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