

Okay I did the same calculation but with Martian orbit as dyson sphere size, and 50% efficiency I got a wavelength of 3.4um so nicely in the infrared range of JWST.
I think the sphere would need to be like 99.95% efficient to be undetectable by JWST at Martian orbit radius.
I was told there was no such thing as a shortage in a free market, why won’t the executive branch embrace free market economics?