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What is the resolving power of a 25 -cm ( 10 -in. ) telescope at a...

What is the resolving power of a 25 -cm ( 10 -in. ) telescope at a wavelength of 550 nm ? What do two stars 1.5 arc seconds apart look like through this telescope?

How does the resolving power of the Mount Palomar 5 -m telescope compare with that of the 2.4 -m Hubble Space Telescope? Why does HST generally still outperform the ground-based 5 -m telescope?

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