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... М45 < М46 > М47 ...
Open star cluster M46
Open star cluster M46 is in the constellation Puppis (Pup).
Equatorial coordinates (epoch J2000):
Visual magnitude: 6,5m
Optimum magnification for a telescope with observations of M46, 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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