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| Whirlpool Galaxy portrait NASA APOD |
The breath-taking portrait of
Whirlpool Galaxy M51 published February 24, 2013 in APOD is a digital combination of images taken from
Hubble space telescope and from the 0.9 meter telescope at
Kitt Peak National Observatory, Tucson, Arizona.
"For the amateur, M51 is easy and a showpiece if the sky is dark, but is quite sensitive for light pollution which easily makes it fade in the background. Under very good conditions, even suggestions of its spiral arms can be glanced with telescopes starting from 4-inch. Low magnification is best for viewing this pair."
Messier Object 51
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