JOHN CHUMACK / SCIENCE PHOTO LIBRARY JOHN CHUMACK / SCIENCE PHOTO LIBRARY
Double Cluster (h and Chi Persei) are open clusters in Perseus with visual magnitudes of 4.3 (h) and 4.4 (Chi) also known as NGC869 and NGC884. 16 F4.5, 100 speed film, 30 minute , Oct. 1995.
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