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AS time passes and astronomical work advances there is a greater demand, year by year, for more powerful instruments of research. Fortunately, instrument makers have so far been able to fulfil the ...

With a 100-inch (2.5-meter) diameter mirror for collecting light, the Hooker telescope at Mount Wilson was the largest telescope at the time.

Designed by George Ellery Hale, the Hooker telescope at Mount Wilson Observatory used a 100-inch diameter mirror, making it the largest telescope in the world at the time.

If your telescope magnifies the light from a 2-inch telescope 100 times, it would spread the light of the stars too thin and you’d see a dim, blurry mess.

At the of age 30, he arrived at Mount Wilson Observatory in Southern California just in time to use the new Hooker 100-inch telescope, at the time the largest in the world.

If this were not so, it might be expected that the new 100-inch telescope would afford a power of 10,000 diameters, bringing the moon, (to employ again the popular illustration,) apparently within ...

Mount Wilson was the site of the 100-inch Hooker Telescope, the world’s biggest when it was finished in 1917, and the lair of Edwin Hubble, who discovered the expansion of the universe with it.

With a 100-inch (2.5-meter) diameter mirror for collecting light, the Hooker telescope at Mount Wilson was the largest telescope at the time.