January 20, 20223 yr I love how that one sensor is always at a comfortable temperature around 50F. Right next to 134F and -340F. Edited January 20, 20223 yr by SimonBolivar
February 11, 20223 yr First image from the telescope is in Read more about the focusing process here: http://blogs.nasa.gov/webb/2022/02/11/photons-received-webb-sees-its-first-star-18-times/
February 11, 20223 yr Really though, this is all very exciting. Edited February 11, 20223 yr by captcha
March 16, 20223 yr ESA's Gaia spacecraft, also orbiting L2, managed to capture a snap of Webb from a million kilometers away https://www.esa.int/Science_Exploration/Space_Science/Gaia/Gaia_snaps_photo_of_Webb_at_L2 Edited March 16, 20223 yr by elfenix
March 17, 20223 yr 12 hours ago, Radical Larry said: This is awesome. This is just a test image, pretty much the first real image that the telescope took. But it is already full of galaxies!
April 13, 20223 yr On 2/11/2022 at 1:18 PM, WithoutAClue said: First image from the telescope is in Read more about the focusing process here: http://blogs.nasa.gov/webb/2022/02/11/photons-received-webb-sees-its-first-star-18-times/
April 28, 20223 yr 2 hours ago, LonghornSean said: It's so incredible that we have a telescope with a golden mirror a million miles away that's able to make micro adjustments that are fractions of the wavelength of light. And it all fucking works! I'm so excited to see the science that comes out of this triumph
April 28, 20223 yr 4 minutes ago, Captainant said: It's so incredible that we have a telescope with a golden mirror a million miles away that's able to make micro adjustments that are fractions of the wavelength of light. And it all fucking works! I'm so excited to see the science that comes out of this triumph Don’t forget it has a delta T of like 200 K front to back.
May 10, 20223 yr They've released some prelim images after alignment. It's stellar. (you can tip your waiter) New image on right, image from older telescope on the left. Image taken from this article: https://gizmodo.com/webb-telescope-sharp-images-nasa-1848899825
June 10, 20223 yr James Webb Telescope hit by micrometeoroid just months into flight. Quote NASA's next-generation space observatory has sustained its first noticeable micrometeoroid impact less than six months after launch, but the agency isn't too concerned. The James Webb Space Telescope, also known as Webb or JWST, launched on Dec. 25, 2021. It has spent the intervening months trekking out to its deep-space post and preparing for science observations, a complicated process that has gone remarkably smoothly; recently, NASA said it expects to unveil the first science-quality images from the telescope on July 12. Now, the agency announced(opens in new tab) on Wednesday (June 8) that the observatory has experienced its first few impacts from tiny pieces of space debris called micrometeoroids. But don't panic: Neither the observatory's schedule nor its scientific legacy is expected to suffer. "With Webb's mirrors exposed to space, we expected that occasional micrometeoroid impacts would gracefully degrade telescope performance over time," Lee Feinberg, Webb optical telescope element manager at NASA's Goddard Space Flight Center in Maryland, said in the statement. "Since launch, we have had four smaller measurable micrometeoroid strikes that were consistent with expectations, and this one more recently that is larger than our degradation predictions assumed." The most serious of the impacts occurred between May 23 and May 25 and affected the C3 segment of the 18-piece gold-plated hexagonal primary mirror, according to the statement. All spacecraft are expected to experience and designed to withstand micrometeoroid impacts, and JWST is no different. The observatory's engineers even subjected mirror samples to real impacts to understand how such events might affect the mission's science. However, the recent impact was larger than those that mission personnel had modeled or could test on the ground, according to the statement. Despite the impact coming so early in the observatory's tenure, NASA officials are confident that the $10 billion telescope will still perform adequately. "We always knew that Webb would have to weather the space environment, which includes harsh ultraviolet light and charged particles from the sun, cosmic rays from exotic sources in the galaxy, and occasional strikes by micrometeoroids within our solar system," Paul Geithner, technical deputy project manager at NASA Goddard, said in the statement. "We designed and built Webb with performance margin — optical, thermal, electrical, mechanical — to ensure it can perform its ambitious science mission even after many years in space." In addition, JWST launched with its optics in even better shape than the agency bargained for, officials noted in the statement. Some micrometeoroid impacts can be predicted, officials wrote. For example, when the spacecraft is set to fly through known meteor showers, personnel can maneuver JWST's optical systems into safety for these events. However, the recent impact was not part of such a meteor shower and the statement classified it as "an unavoidable chance event." After an impact occurs, engineers can individually adjust the 18 primary mirror segments on the observatory to keep the mirror as a whole finely tuned. As the JWST team continues to evaluate the impact, NASA is focused on better understanding both the particular event and the environment that the observatory will experience throughout its mission. The telescope is orbiting what scientists call the Earth-sun Lagrange point 2, located nearly 1 million miles (1.5 million kilometers) away from Earth in the direction opposite the sun. "We will use this flight data to update our analysis of performance over time and also develop operational approaches to assure we maximize the imaging performance of Webb to the best extent possible for many years to come," Feinberg said.
July 4, 20223 yr Pics coming next Tuesday. https://scitechdaily.com/astronomer-says-new-webb-space-telescope-images-almost-brought-him-to-tears/
July 4, 20223 yr 2 minutes ago, miguelito said: Do they have to drop the film off at a Kodak store first, or what? They have to photoshop out all of the space ships and aliens waving. That takes a while with large field images.
July 11, 20223 yr On 5/10/2022 at 1:31 AM, Sam Lin said: They've released some prelim images after alignment. It's stellar. (you can tip your waiter) New image on right, image from older telescope on the left. Image taken from this article: https://gizmodo.com/webb-telescope-sharp-images-nasa-1848899825 JJ Abrams underestimated the amount of lens flare in real space.
July 11, 20223 yr This is just crazy when you think about what this means. https://webb.nasa.gov/content/science/firstLight.html
July 11, 20223 yr This picture is from a 12.5 hour exposure. The Hubble Deep Field picture was a 10 day exposure. Pretty damn amazing.
July 12, 20223 yr There is an incredible amount of gravitational lensing in the center of that photo, with a few of those galaxies doubled up. It’s absolutely mind blowing the sheer scale of the universe…cannot wrap my head around it
July 12, 20223 yr Highlights from today's release (cross-posted from the DT thread): Image No.3 Image No.4 Image No.5
July 16, 20223 yr X-posted from the DT thread: A test of Webb's tracking systems yielded this image of Jupiter: Per a NASA presser, the image was taken during the testing buildup prior to last Tuesday's image releases. Webb utilized its NIRCam (near-infrared?) instrument's short-wavelength filter to highlight the planet's bands and Great Red Spot. Higher res version here: Spoiler
July 20, 20223 yr Quote The James Webb Space Telescope has found the oldest known galaxy in the universe. The collection of stars – called ArmyBrat GLASS-z1 – dates to just 300 million years after the big bang. This bests the previous oldest galaxy, known as GN-Z11, spotted by the Hubble Space Telescope by 100 million years. The researchers, from the Harvard and Smithsonian Centre of Astrophysics in Massachusetts, also discovered a second galaxy called GLASS-z11 which is roughly the same age. Both of the galaxies have a mass equivalent to one billion suns, which the team suggests is what they would expect from 500 million-year-old - which could indicate that the stars formed even earlier than scientists think.
August 5, 20223 yr Nice detailed closeup of Proxima Centauri…. According to a French sciientist…. https://www.cnn.com/2022/08/05/europe/scientist-space-image-chorizo-intl-scli-scn/index.html Edited August 5, 20223 yr by Armybrat
August 28, 20223 yr Author first co2 exoplanet confirmation not spectacular, but a milestone https://www.textise.net/showText.aspx?strURL=https%3A//www.nytimes.com/2022/08/26/science/space/webb-telescope-wasp-exoplanet.html#site-content
January 17, 20232 yr https://skyandtelescope.org/astronomy-news/the-james-webb-space-telescope-is-finding-too-many-early-galaxies/ Amazing the fundamentals of our understanding of the universe are being dramatically altered w/info from JW
December 18, 20232 yr https://www.nasa.gov/missions/webb/nasas-webb-rings-in-holidays-with-ringed-planet-uranus/ https://webbtelescope.org/contents/news-releases/2023/news-2023-150#section-id-2
December 18, 20232 yr I told my wife I'd like to ring in the holidays with a closeup of uranus, but you can guess how that went.
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