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Open Clusters NGC 7790, NGC 7788, Berkeley 58, Frolov 1, Harvard 21 and King 12 in Cassiopeia

The open clusters NGC 7790 and NGC 7788 (center) are the most prominent  objects in this wide field view of a portion of the Milky Way in the constellation of Cassiopeia.  However, there are six named open clusters in this field.  Starting from the lower left –> Berkeley 58, NGC 7790, NGC 7788, Frolov 1 Harvard 21 and King 12.

This image was taken on the evening of September 11, 2018 and the morning of September 12, 2018 with a ZWO ASI1600MM-C camera attached to a Takahashi FSQ-106 telescope at the native f/5 focal length.  The exposure times were 240 seconds for each of the red, green and blue filters [Baader 36mm unmounted].  A total of 21 x 240 second exposures were captured for each color filter.

Subexposure calibration, alignment and stacking was done using PixInsight.  Post-processing image enhancement was done with PixInsight and Photoshop.

Click on the image below to see a slightly larger version.  Follow this link for a full resolution version.

Posted in Star Clusters

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