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... М55 < М56 > М57 ...
Globular star cluster M56
Globular star cluster M56 is in the constellation Lyra (Lyr).
Equatorial coordinates (epoch J2000):
Visual magnitude: 9,5m
Optimum magnification for a telescope with observations of M56, depending on the aperture of the telescope (D), is about D/3-0.8D. 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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