М26 < М27 > М28 ...
Planetary nebula M27
Planetary nebula M27 or Dumbbell nebula is in the constellation Vulpecula (Vul).
Equatorial coordinates (epoch J2000):
Visual magnitude: 7,4m
Optimum magnification for a telescope with observations of M27, depending on the aperture of the telescope (D), is about D/4-D/2. Higher magnifications of course add details, but lead to a strong drop in the brightness of the image, making it difficult to observe.
Nikolay Kurdyapin, astro-map.com
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