This galaxy may be best viewed under low magnification; when highly magnified, the diffuse emission becomes more extended and appears too faint to be seen by many people.

Neutral hydrogen is also associated with diffuse emission at infrared wavelengths that can confuse observations of faint infrared sources.

These emissions can come from both clearly visible (explosive) eruptions and from diffuse (or quiescent) emissions, and there is no a real consensus about the relative importance of the latter.

The radiation itself comprises spectrally diffuse emissions as well as narrowband tones with bandwidths as narrow as 200 Hz.

To resolve the gamma-ray sky: unidentified sources and diffuse emission.

They are used in radiometry to characterize diffuse emission and reflection of electromagnetic radiation.

Resolve the gamma-ray sky: characterize unidentified sources and diffuse emission.

Make high-resolution maps of diffuse galactic emission over a wide range of galactic latitudes.

For most sectors, the requirements consist of emission limits and limits on diffuse emissions.

They can be seen in silhouette against the bright diffuse mid-infrared emission from Galactic plane.