What massive telescope did Edwin Hubble use at Mount Wilson Observatory to resolve individual stars in Andromeda?

Answer

100-inch Hooker Telescope

Hubble utilized the immense light-gathering power of the 100-inch Hooker Telescope at Mount Wilson Observatory, which was necessary to see individual stars within M31.

What massive telescope did Edwin Hubble use at Mount Wilson Observatory to resolve individual stars in Andromeda?
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