Four open clusters in Cassiopeia

Posted by dcrowson
on Sunday, October 25, 2015

IC 166 (top left) shines at a faint 11.7 magnitude. Dust obscures this one causing the color to go red.

NGC 654 (top right) shines at magnitude 6.5 and is located approximately 7,800 light-years away. The larger star at the bottom right has some nebulosity that is cataloged as vdB 6. The dark nebulae to the left (east) is cataloged as LDN 1337. LDN 1332 and 1334 are located just above the cluster.

NGC 663 (Caldwell 10) (bottom, right of center) shines at magnitude 7.1 and is located approximately 6,850 light-years away. This cluster contains about 400 stars.

Berkeley 6 (bottom, left of center) shines at approximately 9.5 magnitude.

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 Bortle red zone) on October 18th, 2015 with a SBIG ST-8300M on an Astro-Tech AT90DT at f/6.7 603mm.

LRGB - https://www.flickr.com/photos/dcrowson/22476649021/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