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... М30 < М31 > М32 ...
Spiral galaxy M31
Spiral galaxy M31 or Andromeda galaxy is in the constellation Andromeda (And).
Equatorial coordinates (epoch J2000):
Visual magnitude: 3,4m - this object can be seen with the naked eye.
Optimum magnification for a telescope with observations of M31, depending on the aperture of the telescope (D), is about D/6-D/3. Higher magnifications of course add details, but lead to a strong drop in the brightness of the image, making it difficult to observe.
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Nikolay Kurdyapin, astro-map.com
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