From SOHO coronagraph C2 and C3 data at:
https://sohodata.nascom.nasa.gov/cgi-bin/data_query
Many thanks
...
Hercules A
Radio-Optical View of the Galaxy Hercules A - Many thanks to: NASA, ESA, S. Baum and C. O'Dea (RIT), R. Perley and W. Cotton (NRAO/AUI/NSF), and the Hubble Heritage Team (STScI/AURA)