neptune and friends imaged by webb 1st time in IR

[MrPosti...@kymhorsell.com]

Some images at <kymhorsell.com/WEBBNEPT>.

From Micah Hanks' newslatter 22 Sept, 2022:

[...]
Neptune system expert and Webb team scientist Heidi Hammel says that
part of what makes the latest images so exciting is that they mark the
first time Neptune's rings have been imaged in the infrared.

"It has been 3 decades since we last saw these faint, dusty
rings," Hammel said in a statement, "and this is the first time we've
seen them in the infrared."

One of Webb's most exciting imaging technologies is its Near-Infrared
Camera (NIRCam), which grants astronomers an opportunity to perceive
distant regions of our universe at wavelengths that Hubble and
ground-based telescopes aren't capable of. Because the NIRCam collects
light within the near-infrared visual range of between 0.6 and 5
microns, many space objects that it visualizes look strikingly
different through Webb's eyes.

Case in point, Neptune's characteristic bluish coloration is absent in
Webb's newest photos, appearing instead as a dark planetary mass since
methane absorbs light at infrared wavelengths. Brighter regions
apparent in the photos are the result of cloud formations surrounding
the ice giant, which have been observed with the aid of other
telescopes over the last few decades. Rings, and Other Things

However, the most apparent feature revealed about the planet in the
new Webb photos is the presence of its rings, which at infrared
wavelengths appear in striking detail, the likes of which astronomers
have not managed to photograph since 1989.

Among the other unique features Webb managed to capture in its images
include a vortex at the planet's southern pole, along with a
"continuous band of high-latitude clouds surrounding it" that NASA
characterizes as a JWST first.

The new images also feature Neptune's 14 moons, with the particularly
stunning appearance of Triton, whose light gives rise to a vivid
series of diffraction spikes as seen by the Webb telescope.
[...]

--
"I think some of the phenomena we're going to be seeing continues to be
unexplained and might, in fact, be some type of phenomenon that is the
result of something that we don't yet understand."
--Ex-CIA Director John Brennan

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[Every frame apparently contains things too scary to show the public].