http://www.abc.net.au/science/articles/2012/09/07/3584619.htm
September 7, 2012 - ABC Science
A large number of dying stars called core-collapse supernovae are not
detected because they are obscured by galactic dust, say astronomers.
...
Ryder and colleagues used the Gemini North telescope in Hawaii to peer
through the obscuring dust, looking for the missing supernovae at
infrared wavelengths, which penetrates dust better than optical light.
...