NGC 7023, The Iris Nebula (Cep)

Technical data:    16"f/8-Hypergraph

                           STL6303 with Astronomik-Filterset Type IIc

                           LRGB (L=6x900s; R=3x600s; G=3x600s; B=3x1200s)

                           Author: Bernd Flach-Wilken

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