NGC 5139 - Omega Centauri
From the author of Sizing Up The Universe
Click here for Hertzsprung-Russell diagram.
Full image (click on image for full-size)
Cropped image (click on image for full-size)
February 21, 2016.
FLI Proline 16803 on 17" Planewave CDK at f/6.8
R=G=B=6 min in
15-second guided exposures.
Log stretch, unsharp mask.