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... М89 < М90 > М91 ...
Spiral galaxy M90
Spiral galaxy M90 is in the constellation Virgo (Vir).
Equatorial coordinates (epoch J2000):
Visual magnitude: 9,5m
Optimum magnification for a telescope with observations of M90, 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.
The best month for observing M90 is May. At this time, the object is at midnight near its highest point in the sky, that is, it is less affected by light from the lanterns and atmospheric distortions.
For observers in the northern latitudes:the night sky in May is no longer very dark, so try also to observe M90 in April.
Nikolay Kurdyapin, astro-map.com
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