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Question
An amateur astronomer wants to build a telescope with a diffraction limit that will allow him to see if there are people on the moons of Jupiter. (a) What diameter mirror is needed to be able to see 1.00 m detail on a Jovian Moon at a distance of $7.50\times 10^{8}\textrm{ km}$ from Earth? The wavelength of light averages 600 nm. (b) What is unreasonable about this result? (c) Which assumptions are unreasonable or inconsistent?
1. $549\textrm{ km}$
2. This size is impractical
3. It's unreasonable to expect to see objects so close together at such a great distance.
Solution Video