This field of view includes two extremely faint planetary nebulae in the constellation Cassiopeia.
In the upper part of the image, we find Heckathorn-Fesen-Gull 1 (HFG1... Read more
This field of view includes two extremely faint planetary nebulae in the constellation Cassiopeia.
In the upper part of the image, we find Heckathorn-Fesen-Gull 1 (HFG1... Read more
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