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Star Clusters

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The Coma Berenices Star Cluster

Coma Berenices Star Cluster (SS61 Ra).jpg

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The large star cluster in Coma Berenices called Mel111, accompanied by several galaxies, notably the edge-on NGC 4565 at lower left and the spiral NGC 4559 at upper left. The field of view is 7.5° by 5°, so similar to binoculars.

This is a stack of 12 x 6-minute exposures with the Sharpstar 61mm EDPH II telescope at f/4.6 with its reducer (for a focal length of 280mm), and Canon EOS Ra at ISO 800. Sub-frames dithered with the MGEN3 auto-guider. No darks applied. Diffraction spikes added in post for artistic effect.
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The large star cluster in Coma Berenices called Mel111, accompanied by several galaxies, notably the edge-on NGC 4565 at lower left and the spiral NGC 4559 at upper left. The field of view is 7.5° by 5°, so similar to binoculars.<br /> <br /> This is a stack of 12 x 6-minute exposures with the Sharpstar 61mm EDPH II telescope at f/4.6 with its reducer (for a focal length of 280mm), and Canon EOS Ra at ISO 800. Sub-frames dithered with the MGEN3 auto-guider. No darks applied. Diffraction spikes added in post for artistic effect.