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Cassiopeia & Perseus Clusters (135mm Ra).jpg

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A framing of some of the main star clusters (and some nebulas) in Cassiopeia and Perseus.

At left are the Heart and Soul Nebulas in Cassiopeia, aka IC 1805 and IC 1848 respectively, plus the smaller and more intense patch of nebulosity NGC 896. With these nebulas are the star clusters NGC 1027 and Mel 15. At bottom is the famous Double Cluster, NGCs 884 and 869. The small cluster NGC 957 is to the left of the Double Cluster. At upper right below the line joining the two bright stars in Cassiopeia is the prominent star cluster NGC 663, with NGC 654 above and M103 to the right. The reddened object left of NGC 663 is the cluster IC 166. At far right is NGC 457, the ET Cluster.

This is a stack of 15 x 2-minute tracked but unguided exposures with the Canon EF135mm lens at f/2.8 and Canon Ra at ISO 1250, with a NISI Natural Night broadband filter on the lens to enhance the nebulosity. Taken from home on a very clear night September 20, 2022. Taken with the Star Adventurer GTi tracker/equatorial mount as part of testing the mount.
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Star Clusters, NGC/IC Objects, Nebulas, Various Constellations
A framing of some of the main star clusters (and some nebulas) in Cassiopeia and Perseus. <br /> <br /> At left are the Heart and Soul Nebulas in Cassiopeia, aka IC 1805 and IC 1848 respectively, plus the smaller and more intense patch of nebulosity NGC 896. With these nebulas are the star clusters NGC 1027 and Mel 15. At bottom is the famous Double Cluster, NGCs 884 and 869. The small cluster NGC 957 is to the left of the Double Cluster. At upper right below the line joining the two bright stars in Cassiopeia is the prominent star cluster NGC 663, with NGC 654 above and M103 to the right. The reddened object left of NGC 663 is the cluster IC 166. At far right is NGC 457, the ET Cluster. <br /> <br /> This is a stack of 15 x 2-minute tracked but unguided exposures with the Canon EF135mm lens at f/2.8 and Canon Ra at ISO 1250, with a NISI Natural Night broadband filter on the lens to enhance the nebulosity. Taken from home on a very clear night September 20, 2022. Taken with the Star Adventurer GTi tracker/equatorial mount as part of testing the mount.