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Questions about infrared astronomy, both observations (in the broadest sense) and instruments. The infrared part of the electromagnetic spectrum has a longer wavelength than visible light, but shorter than sub-mm or radio waves.

3 votes

Question: By design, JWST cannot observe in the anti-sun direction. Is this due to Gegensche...

I'm going to say no as well. If you look at the way JWST is pointed in the anti-sun position, you can see that the telescope boresight remains parallel to the plane of the sunshield (see diagram below …
John McCarthy's user avatar