Are the Colors in Webb Telescope Images 'Fake'? -
Astronomy is often done outside the visible spectrum, because many of the most interesting objects in space are shining brightly in ultraviolet, x-rays, and even radio waves . The Webb Telescope is designed to see infrared light, whose wavelengths are longer than red visible light but shorter than microwaves.
A raw image of the Carina Nebula as seen by NIRCam, before the infrared light is translated into visible wavelengths.The same star-forming region of the Carina Nebula, seen after the infrared data is translated to visible wavelengths. Bright stars have large diffraction spikes, an artifact of being imaged by Webb.
“It’s a balance between the art and the science, because you want to showcase science and the features, and sometimes those two things don’t necessarily work together,” Pagan added.Webb’s first representative color images were released July 12, over six months after the telescope launched from an ESA spaceport in French Guiana. From there, Webb traveled about a million miles to L2, a point in space where gravitational effects allow spacecraft to stay in place without burning much fuel.
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