Open cluster Stock 17

Posted by dcrowson
on Saturday, August 26, 2017

Stock 17 (very small, at the center of the image) is a class I 2 p open cluster located approximately 7,000 light-years away in Cassiopeia. This is one of 24 open clusters compiled by Jurgen Stock in the 1950s. A full list can be found here - http://www.deepskypedia.com/wiki/List:Stock (when and if the reference comes back online).

King 21 can be found at the top left.

The red nebula near the bottom right is Sharpless 165 (LBN 565).

Luminance – 12x600s – 120 minutes – binned 1x1
RGB – 8x300s – 40 minutes each – binned 2x2

240 minutes total exposure – 4 hours

Imaged from Dardenne Prairie, Missouri (a red zone) on August 23rd, 2017 with a SBIG ST-8300M on an Astro-Tech AT90EDT at f/6.7 603mm.

LRGB - https://www.flickr.com/photos/dcrowson/36429564520/sizes/l

Comments
To leave a comment you must be a member of our community.
Login to your account now, or register for an account to start participating.
No one has commented yet.

Join our Community!

Our community is FREE to join. To participate you must either login or register for an account.

ADVERTISEMENT

FREE EMAIL NEWSLETTER

Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. View our Privacy Policy.

ADVERTISEMENT
ADVERTISEMENT
Find us on Facebook