Wisconsin H-Alpha Mapper

Exploring Ionized Gas in Our Galaxy

[WHAM All-Sky H-alpha Survey]

Velocity-integrated Hα emission from the Milky Way. The grayscale image shows data collected from Kitt Peak, AZ. Additional observations from WHAM's new location on Cerro Tololo, Chile now fills in the gap of sky unavailable from the northern hemisphere. Our ongoing progress reducing this new data is shown in color. Last update: 10 Feb 2012.


Welcome to our site! Here you can learn about WHAM, read our latest news, explore the science we've been doing, or download our publicly released survey dataset. You can also find a list of WHAM-related publications and presentations. Feel free to contact us if you have any questions. These links are also available in the tabs along the top of this content pane.


WHAM was built and operates due to support primarily from the National Science Foundation.