M15 - globular cluster in Pegasus

Posted by Rod Pommier
on Sunday, December 01, 2013

by Rod Pommier

Telescope/Mount: Celestron Compustar C14. Camera: SBIG STL 11000M with Baader Planetarium LRGB filters.
SBIG AO-L Adaptive Optics at 7Hz. Location: Pommier Observatory, Portland, OR, USA. Dates: 2013-08-17 and 2013-08-18. Exposures: LRBG=100:100:100:100.

M15 is a globular cluster located in a star-poor field off the tip of Pegasus' nose (the star Enif). It lies 33,600 light-years from Earth. It is a Shapley-Sawyer class IV globular cluster, which are characterized by globulars that have considerable scattering of peripheral stars, but their hallmark is that they still retain a small dense core of stars that cannot be resolved. In the case of M15, the dense core is intensely bright, and has distinctly triangular shape outlined by dark lanes, one of which is remarkably linear.

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.

ADVERTISEMENT
ADVERTISEMENT
Find us on Facebook

Loading...