Full Focus JWST!

I just saw a very welcome news item announcing that after months of work by the relevant teams, the James Webb Space Telescope is at last completely aligned, in full focus and all the associated instruments are working well. Here is a composite of images demonstrating this:

For reference here is a glossary of the abbreviations:

(NIRISS is actually coupled within the same module with the Fine Guidance Sensor (FGS) so they can be regarded as parts of the same instrument.)

Anyway, congratulations to everyone involved on this impressive achievement, which is a testament to a great deal of skill and hard work. The job isn’t over yet, of course, as there is still a great deal detailed testing and science validation to be carried out. No doubt we can look forward to some really exciting images from the commissioning period in due course!

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