Celestial hemisphere:  Northern  ·  Constellation: Coma Berenices (Com)  ·  Contains:  NGC 4559  ·  NGC 4565  ·  Needle Galaxy  ·  The star 12Com  ·  The star 13Com  ·  The star 14Com  ·  The star 16Com  ·  The star 17Com  ·  The star 18Com  ·  The star 21Com  ·  The star 4Com  ·  The star 7Com  ·  The star γCom
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Coma Berenices Star Cluster, Alan Dyer
Coma Berenices Star Cluster
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Coma Berenices Star Cluster

Getting plate-solving status, please wait...
Coma Berenices Star Cluster, Alan Dyer
Coma Berenices Star Cluster
Powered byPixInsight

Coma Berenices Star Cluster

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Description

The Coma Berenices star cluster, aka Mel 111, with a smattering of galaxies, taken under dark skies on a spring evening. The edge-on galaxy NGC 4565 is at left.

I shot this as a test of the William Optics RedCat 51mm f/5 astrographic refractor (which provides a focal lengthof 250mm). This was on the iOptron SkyGuider Pro tracker, a popular portable mount to use with the RedCat. I used it unguided for a set of 2-minute exposures. Of the 20 exposures, 12 were relatively untrailed and so were selected for stacking for this image.

This is a stack of 12 x 2-minutes at ISO 1250 with the Canon EOS Ra. Stacked and blended in Photoshop CC. The little RedCat astrograph is very sharp to the corners. The field is about 8° by 5.5°.

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Coma Berenices Star Cluster, Alan Dyer

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Canadian Astrophotography