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Cassiopeia Clusters (SS76 R5).jpg

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A framing of some of the main open star clusters in eastern Cassiopeia, including: NGC 663 at lower left and NGC 457 at upper right. NGC 457 is known as the Owl or ET Cluster. Above NGC 457 is smaller NGC 436 and above NGC 663 is smaller NGC 654. To the right of NGC 663 is NGC 659. Between NGC 663 and the bright blue star Ruchbah is Messier 103. The yellowed cluster in the extreme lower left corner is Be 6.

This is a stack of 20 x 5-minute exposures with the SharpStar 76mm EDPH with its f/4.5 reducer/flattener, and the Canon R5 at ISO 800, on the Star Adventurer GTi mount, autoguided with the Lacerta MGEN3. No filters were employed.
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© Alan Dyer/AmazingSky.com
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Contained in galleries
Messier Objects, Star Clusters, NGC/IC Objects
A framing of some of the main open star clusters in eastern Cassiopeia, including: NGC 663 at lower left and NGC 457 at upper right. NGC 457 is known as the Owl or ET Cluster. Above NGC 457 is smaller NGC 436 and above NGC 663 is smaller NGC 654. To the right of NGC 663 is NGC 659. Between NGC 663 and the bright blue star Ruchbah is Messier 103. The yellowed cluster in the extreme lower left corner is Be 6.<br /> <br /> This is a stack of 20 x 5-minute exposures with the SharpStar 76mm EDPH with its f/4.5 reducer/flattener, and the Canon R5 at ISO 800, on the Star Adventurer GTi mount, autoguided with the Lacerta MGEN3. No filters were employed.