Black holes
Hubble Optical Image of Hercules A (3C 348)
November 29, 2012 · NASA · Hercules A, Herc A, 3C 348 · Hercules
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This Hubble Space Telescope composite of V and I filters shows the active galaxy 3C 348, also known as Hercules A. The Hubble data were taken in October of 2012.
About the colours
This image is a composite of separate exposures acquired by Hubble's WFC3 instrument. Several filters were used to sample various wavelengths/frequencies. 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: Orange: F814W (I) Blue: WFC3/UVIS F606W (V)
About the data
The image was created from Hubble data from proposal 13065 : S. Baum and C. O'Dea (Rochester Institute of Technology) and J. Stoke and F. Lo (Associated Universities, Inc.).
Notes: The VLA data are from the National Radio Astronomy Observatory observation project TDEM0011: R. Perley, W. Cotton, and U. Rao (NRAO/AUI/NSF). These data were taken August 2010 through September 2011. Frequencies 4-9 GHz were measured.