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... М30 < М31 > М32 ...
Spiral galaxy M31
Die Sternhaufen M31 or Andromeda Spiral 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.
The best month for observing M31 is October. At this time, the object is at midnight near its highest point in the sky, that is, it is less affected by light from the lanterns and atmospheric distortions.
Nikolay Kurdyapin, astro-map.com
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