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Dr Sardonicus 2022-02-11 20:18

[url=]Star light, star bright, first star I see 18 times tonight...[/url][quote]The James Webb Space Telescope is nearing completion of the first phase of the months-long process of aligning the observatory's primary mirror using the Near Infrared Camera (NIRCam) instrument.

The team's challenge was twofold: confirm that NIRCam was ready to collect light from celestial objects, and then identify starlight from the same star in each of the 18 primary mirror segments. The result is an image mosaic of 18 randomly organized dots of starlight, the product of Webb's unaligned mirror segments all reflecting light from the same star back at Webb's secondary mirror and into NIRCam's detectors.

What looks like a simple image of blurry starlight now becomes the foundation to align and focus the telescope in order for Webb to deliver unprecedented views of the universe this summer. Over the next month or so, the team will gradually adjust the mirror segments until the 18 images become a single star.

"The entire Webb team is ecstatic at how well the first steps of taking images and aligning the telescope are proceeding. We were so happy to see that light makes its way into NIRCam," said Marcia Rieke, principal investigator for the NIRCam instrument and regents professor of astronomy, University of Arizona.

tServo 2022-03-22 12:52

First images from Webb exceed expectations !


jwaltos 2022-03-29 20:00

[QUOTE=tServo;602288]First images from Webb exceed expectations !

(..and Neo's one-liner.)

retina 2022-04-19 11:36

How James Webb's Instruments Work - and What They'll Show Us!

Dr Sardonicus 2022-05-13 01:33

1 Attachment(s)
I noticed the following image comparison of the Large Magellanic Cloud in recent news reports. I leave it to interested readers to track down official accounts.

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