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... М14 < М15 > М16 ...
Globular star cluster M15
Globular star cluster M15 is in the constellation Pegasus (Peg).
Equatorial coordinates (epoch J2000):
Visual magnitude: 7,5m
Optimum magnification for a telescope with observations of M15, depending on the aperture of the telescope (D), is about D/2-D. 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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