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JWST's primary mirror hangs suspended from a crane in a high bay, as several technicians in white protective bunny suits look on. The NASA Goddard logo is reflected in the mirror. The mirror is made up of 18 gold-colored hexagon-shaped segments, arranged in 5 columns to form a hexagon shape. The center of the mirror is empty, with a box-like baffle for the tertiary mirror sticking out. The supports for the secondary mirror are attached via hinges at the bottom of the mirror. The supports are folded up, forming a vertical triangle-shaped structure that partially covers the mirror.

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https://media.astrodon.social/media_attachments/files/113/448/548/241/906/182/original/10d47c79b42f98ff.jpg

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  1. Embed this notice
    Kelly Lepo (kellylepo@astrodon.social)'s status on Monday, 18-Nov-2024 09:39:56 JST Kelly Lepo Kelly Lepo

    JWST's primary mirror is made up of 18 hexagonal, gold-coated segments. A new blog post is out today from the team that keeps the mirror segments perfectly aligned so that they function as one big mirror.

    So far, everything is going great. The overall performance of the telescope is far better than expected, and the alignment needs fewer corrections than expected.

    https://blogs.nasa.gov/webb/2024/11/08/monitoring-webbs-mirrors-for-optimal-optics/

    #JWST #NASA #Astronomy

    In conversation about 4 days ago from astrodon.social permalink
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