data draft From James Webb Space Telescope It yielded a stunning image of a nearby galaxy, with a little help from an unofficial image processor.
I chose NGC 1365 because that was the latest interesting target that the Space Telescope Science Institute or STScI (the organization that manages JWST) released public images for Redditor. u/SpaceGuy44He is a graduate student in astronomy at a university in California inverse.
The Great Narrow Spiral Galaxy, officially known as NGC 1365, is 56 million light-years away, and is one of a sample of galaxies that astronomers selected for some of Webb’s first observations, with the goal of learning more about star formation in the nearby regions of the universe. NGC 1365 is an ideal candidate, as it is a star forming and actively feeding galaxy giant black hole At its center, it happens to be “face to face” toward Earth, so astronomers can see its spiral, double-bared structure in all its glory.
In most barred spiral galaxies—including, likely, our own Milky Way – Rod-shaped structure made of older, less metallic stars extending through the center of the helix. About two-thirds of spiral galaxies contain bars, but NGC 1365 is a rare specimen: it contains two Two bars, with one inside the other: an outer bar that runs over the galaxy horizontally, and an inner bar that runs from the 10 o’clock position to the 4 o’clock position.
The complex structures of the rods and spirals are formed, in part, thanks to stars, gas and dust circling the galactic center at different speeds, forming waves of higher and lower intensity that eventually become the rods and spirals we see in galaxies like NGC 1365. Gravity from the rods of NGC 1365 may help pull material toward the galactic center, fueling the formation of a new star and feeding the hungry black hole at its core.
The first image, captured by Webb’s NIRCam instrument, shows the galaxy’s light at near-infrared wavelengths; The second, from the MIRI instrument, shows an average infrared wavelength display.
unlike Stunning full color photos Webb’s official processing team has released to the public over the past few weeks, the versions that u/SpaceGuy44 is talking about are in a data format called FITS (Flexible Image Transfer System).
as for NASAFITS is the data format most used in astronomy for transferring, analyzing and archiving scientific data files. FITS is much more than just another image format (such as JPG or GIF) and is primarily designed for storing scientific data sets consisting of multidimensional arrays (images) and two-dimensional tables organized into rows and columns of information.
In other words, although anyone can download a FITS file from a Webb archive, you need specialized software to convert the file into a format that image editors like Photoshop or GIMP can handle. From there, it comes down to choosing red, green, and blue filters and aligning the image.
u/SpaceGuy44 says: “You do need some skill with photo editors, but I just started using GIMP a month ago and think I’m pretty good with it.”
File conversion software, including Fits Liberator and SAO DS9, are publicly accessible, and there are online classes (including several hosted by STScI).
“I would say that most of the people processing these images are amateurs unless the images are released by NASA themselves or another research team,” u/SpaceGuy44 says. “Although I’m not a hobbyist, I’ve had a lot of passion and free time to do this since I was on summer break from graduate school.”
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