What was the name of the formidable telescope at Mount Wilson Observatory through which Hubble made his most consequential observations?

Answer

100-inch Hooker telescope

The 100-inch Hooker telescope housed at the Mount Wilson Observatory was the powerful instrument Hubble utilized to gather the empirical data necessary to resolve the nature of spiral nebulae.

What was the name of the formidable telescope at Mount Wilson Observatory through which Hubble made his most consequential observations?
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