Rich star cluster nicknamed Caroline's Rose, or officially NGC 7789, in constellation Cassiopeia. Caroline Herschel, sister of William Herschel, discovered it in 1783. In the eyepiece its stars take on the appearance of nested rose petals. Subtle effects like that are always lost in photos of star clusters.

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Photo credit: © Alan Dyer/VW PICS/SCIENCE PHOTO LIBRARY / Alamy / Afripics
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Keywords: -, 1783, 7789, 90cft, astronomical, astronomy, astrophysical, astrophysics, caroline, cassiopeia, cluster, clusters, constellation, constellations, earth, evening, herschel, ngc, night, observation, rose, sky, space, star, starry, stars