M51, The Whirlpool Galaxy (NGC 5195-94)

Composite Radio wave and Visible Light Image from Multiple Data Sources

Optical Data: 8.2 Meter Subaru Telescope (NAOJ), Hubble Space Telescope

Digitized Sky Survey, NOAO

Radiowave Data (21cm): NRAO (National Radio Astronomy Observatory) , VLA

Image Assembly and Processing : Robert Gendler and Roberto Colombari