The pair of large and loose star clusters on the Serpens-Ophiuchus border known as the S-O Double Cluster. IC 4756 is at left; NGC 6633 is at right. B

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The pair of large and loose star clusters on the Serpens-Ophiuchus border known as the S-O Double Cluster. IC 4756 is at left; NGC 6633 is at right. Both are fine targets for binoculars. The x 5° field is close to a binocular field of view. This is a stack of 10 x 6-minute exposures with the SharpStar 61mm apo refractor at and with the Canon R6 at ISO 800. Taken from home Oct 3, 2021. Diffraction spikes added with Astronomy Tools actions.

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Size: 5400px × 3600px
Photo credit: © Alan Dyer / VWPics / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: -, 4756, 61mm, 6633, astrograph, astronomy, binocular, cluster, double, galaxy, ic, ngc, open, ophiuchus, r6, serpens, sharpstar, star, tools