Amazing Sky by Alan Dyer

Show Navigation

Image 1 of 1

S-O Clusters and IC 4665 Area (85mm 6DII).jpg

Add to Cart Add to Lightbox Download
The trio of large open clusters ideal for binoculars grouped in Ophiuchus and Serpens — with IC 4756 at left in Serpens, NGC 6633 in Ophiuchus to the right of IC 4756, and IC 4665 at right of frame above the bright star Beta Ophiuchi, or Cebalrai, in Ophiuchus. The pair of NGC 6633 and IC 4756 are also known as the S-O Double Cluster, for their home in Serpens and Ophiuchus. They are an obvious sight when scanning the west side of the summer Milky Way. Below Cebalrai is the large asterism known as Taurus Poniatowski or the “Little Bull,” a group that resembles the Hyades in Taurus. The group was named for the King of Poland, Stanislaus Poniatowski in 1777 by Marcin Poczobutt. The constellation pattern was never accepted but the asterism, now in Ophiuchus, is a fine one for binoculars. This is a stack of 9 x 2-minute exposures at f/2.8 with the 85mm Rokinon lens and Canon 6D MkII at ISO 800, plus a single exposure with the Kenko Softon filter blended in to add the star glows.
Copyright
© 2019 Alan Dyer
Image Size
6244x4164 / 15.3MB
www.amazingsky.photoshelter.com
Contained in galleries
Star Clusters, NGC/IC Objects
The trio of large open clusters ideal for binoculars grouped in Ophiuchus and Serpens — with IC 4756 at left in Serpens, NGC 6633 in Ophiuchus to the right of IC 4756, and IC 4665 at right of frame above the bright star Beta Ophiuchi, or Cebalrai, in Ophiuchus. The pair of NGC 6633 and IC 4756 are also known as the S-O Double Cluster, for their home in Serpens and Ophiuchus. They are an obvious sight when scanning the west side of the summer Milky Way. Below Cebalrai is the large asterism known as Taurus Poniatowski or the “Little Bull,” a group that resembles the Hyades in Taurus. The group was named for the King of Poland, Stanislaus Poniatowski in 1777 by Marcin Poczobutt. The constellation pattern was never accepted but the asterism, now in Ophiuchus, is a fine one for binoculars. This is a stack of 9 x 2-minute exposures at f/2.8 with the 85mm Rokinon lens and Canon 6D MkII at ISO 800, plus a single exposure with the Kenko Softon filter blended in to add the star glows.