Compass and Scale Image of Centaurus A
Centaurus A, Cen A, NGC 5128
1 million light-years (3.4 parsecs)
This image is 2.7 arcminutes (8,500 light-years or 2,600 parsecs) wide.
The image was created from Hubble data from proposal 11360: R. O'Connell (University of Virginia), B. Balick (University of Washington), H. Bond (STScI), D. Calzetti (University of Massachusetts), M. Carollo (Swiss Federal Institute of Technology, Zurich), M. Disney (University of Wales, College of Cardiff), M. Dopita (Australian National University), J. Frogel (Ohio State University Research Foundation), D. Hall (University of Hawaii), J. Holtzman (New Mexico State University), P. McCarthy (Carnegie Institution of Washington), F. Paresce (European Southern Observatory, Germany), A. Saha (NOAO/AURA), J. Silk (University of Oxford), A. Walker (NOAO/CTIO), B. Whitmore (STScI), R. Windhorst (Arizona State University), and E. Young (University of Arizona).
The science team comprises: S. Kaviraj (Imperial College London and the University of Oxford), R. Crockett (University of Oxford), and J. Silk (University of Oxford).
F225W (U), F336W (U), F438W (B), F487N (H-beta), F502N ([O III]), F547M (y), F657N (H-alpha + [N II]), F673N ([S II]), and F814W (I)
This image is a composite of separate exposures acquired by the WFC3 instrument on HST. Several filters were used to sample broad and narrow wavelength ranges. The color results from assigning different hues (colors) to each monochromatic (grayscale) image associated with an individual filter. In this case, the assigned colors are:
White: F225W (U) + F336W (U) + F438W (B)
Blue: F487N (H-beta)
Cyan: F502N ([O III])
Aqua: F547M (y)
Red/orange: F657N (H-alpha + [N II])
Yellow/green: F673N ([S II])
Red: F814W (I)
Illustration Credit: NASA, ESA, and Z. Levay (STScI);
Science Credit: NASA, ESA, and the Hubble Heritage (STScI/AURA)-ESA/Hubble Collaboration;
Acknowledgment: R. O'Connell (University of Virginia) and the WFC3 Scientific Oversight Committee