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James Webb telescope is live (well, almost)!
#1
James Webb telescope is live (well, almost)!
Here is one of the first pics:

[Image: telescope_alignment_evaluation_image_labeled.jpg]

Astronomy Picture of the Day -- March 19, 2022
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#2
RE: James Webb telescope is live (well, almost)!
the 6 spikes suggest some significant aberration remains to be corrected.
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#3
RE: James Webb telescope is live (well, almost)!
(March 19, 2022 at 5:06 pm)Anomalocaris Wrote: the 6 spikes suggest some significant aberration remains to be corrected.

the spikes are difraction paterns from the joins between the mirrors and was expected
The meek shall inherit the Earth, the rest of us will fly to the stars.

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#4
RE: James Webb telescope is live (well, almost)!
(March 19, 2022 at 5:30 pm)zebo-the-fat Wrote:
(March 19, 2022 at 5:06 pm)Anomalocaris Wrote: the 6 spikes suggest some significant aberration remains to be corrected.

the spikes are difraction paterns from the joins between the mirrors and was expected

The astronomers give an explanation of that in their post; the laws of physics.
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#5
RE: James Webb telescope is live (well, almost)!
Awesome! I'm interested in what mysteries JWST can help us solve.
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#6
RE: James Webb telescope is live (well, almost)!
Yeah - the spikes are from the hexagonal mirrors. Not a big problem, though diffraction spikes are why amateurs prefer refractors for astrophotography.
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