(Answered) The nebula ngc 2363 and its host galaxy ngc 2366 in the

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The nebula NGC 2363 and its host galaxy NGC 2366 in the constellation Camelopardis (the Camel) are moving away from us at 252 km/s. At what wavelength does the red Hα line of hydrogen (which causes the color of the nebula) appear in the nebula's spectrum?

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