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NGC 7496, JWST

$52.50

NGC 7496  This image from  the James Webb  Telescopes shows the barred spiral galaxy  NGC 7496, which lies over 24 million light-years away in the constellation Grus. This constellation, whose name is Latin for crane, is one of four constellations collectively known as the Southern Birds.  Hubble’s instruments were unable to penetrate the thick dust and gas that surrounds these regions.The Hubble image can be seen here.https://earthandskyimaging.com/product/ngc-7496-jwst/ JWST, though, can see infrared light that bounces off the dust, allowing the telescope to probe close to the moments when the stars switched on and nuclear fusion ignited in their cores. What’s most remarkable is that NGC 7496 is a normal galaxy, “not a poster-child galaxy.” Yet under the watchful eye of JWST, it suddenly comes to life and reveals channels where stars are forming. The image is remarkable for showing star formation on a grand scale. The glowing, web-like shape shows the interdependent and regulating effects of star formation in large regions of space. There’s no such thing as the birth of a single star; formation is a global phenomenon. The Webb image shows evidence (in the structure of the glowing dust outlining bubbles) of both positive feedback, which compresses clouds of gas and dust to create new stars, and negative feedback, which disperses molecular clouds and interrupts star formation. Feedback can come in the form of intense ultraviolet radiation and stellar winds. These forces act as a cosmic push and pull to both gather and disperse matter. As seen in the image  both forces can result in shells of gas and dust around newly formed stars. This is a false color image with  the strong blue color coming mostly from the 7.7u(7700nm) filter, red comes from the 11.3u filter and green from the 10u filter. A composite image showing detail from both images can be seen here.https://earthandskyimaging.com/product/ngc-7496-jwst-hubble . The image was done by Michael Adler using downloaded data from the MAST site.

 

Category:

Optics:  James Webb Space Telescopes
Mount: Jwst,
Camera: Medium Infrared camera(MIRI)
Filters: JWST 1130w,1000w,770w
Dates/Times:  July 2022
Location: Lagrange Pt 2
Exposure: various
Acquisition:Downloaded raw FITS images for each filter from the MAST website
Processing:  Stretching done using FITS Liberator,  created RGB image in MaximDl. Color balance, brightening, sharpening, noise reduction were done in PS2022.