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... М42 < М43 > М44 ...
Emission nebula M43
Emission nebula M43 or De Mairan's, part of M42 nebula is in the constellation Orion (Ori).
Equatorial coordinates (epoch J2000):
Visual magnitude: 7,0m
Optimum magnification for a telescope with observations of M43, depending on the aperture of the telescope (D), is about D/6-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.
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Nikolay Kurdyapin, astro-map.com
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