Celestial hemisphere:  Northern  ·  Constellation: Perseus (Per)  ·  Contains:  Double cluster  ·  NGC 869  ·  NGC 884  ·  NGC 957  ·  The star 7Per  ·  The star 8Per
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The Double Cluster in Perseus, Amazing Star Color Diversity, Roger Clark
The Double Cluster in Perseus, Amazing Star Color Diversity
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The Double Cluster in Perseus, Amazing Star Color Diversity

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The Double Cluster in Perseus, Amazing Star Color Diversity, Roger Clark
The Double Cluster in Perseus, Amazing Star Color Diversity
Powered byPixInsight

The Double Cluster in Perseus, Amazing Star Color Diversity

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Description

The double cluster in Perseus and on the left, the small cluster NGC 957. Canon 7D Mark I digital camera and 300 mm f/2.8 L IS II lens at f/2.8. 12 one-minute exposures at ISO

1600 were added (12 minutes total exposure). No dark frame subtraction, no flat fields, no noise

reduction. Tracking with an astrotrac. This image is 50% of full resolution and is a crop. The upper

left corner is the upper left corner of the camera image frame, so you can see the impressive star

quality of this lens.

This is a natural color image. One-step color stretch with rnc-color-stretch

More info on the process: http://www.clarkvision.com/galleries/gallery.NEW/web/double-cluster.300mm-7d1c09.26.2014.IMG_2401-11.d0.5xc1s.html

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The Double Cluster in Perseus, Amazing Star Color Diversity, Roger Clark