Stacking Images To Find Faint Sources
Sig06 009

Credit: NASA/JPL-Caltech/H. Dole (IAS)

Artwork • April 20th, 2006 • sig06-009

sig06-009

Coaxing out a signal: this graphic demonstrates how the 24 micron images (shown in blue) of over 20,000 faint galaxies were added up to create a detectable signal at longer wavelengths. In each individual observation, the galaxy is barely visible at 24 microns and invisible at longer wavelengths. When the observations are combined, however, the longer-wavelength images emerge.

About the Object

Name
Type
Galaxy

Color Mapping

Band Wavelength Telescope
Infrared 24.0 µm Spitzer MIPS
Infrared 70.0 µm Spitzer MIPS
Infrared 160.0 µm Spitzer MIPS