The 2MASS Extended Source Catalog (XSC) is primarily composed of galaxies, and secondarily of Milky Way objects. Galaxies are detected all across the sky except for regions of the Galactic Plane that are opaque with stars (e.g., Galactic Center in Sagitarrius). Galaxies concentrate on several spatial scales, including groups, clusters, and large filamentary superclusters. Milky Way objects are almost exclusively confined to the Galactic Plane, |b| < 3 degrees. The following images show the local Universe as traced by the XSC.
Aitoff equal-area projection (w/ 18' pixels) of the integrated XSC flux for Ks <>hr right ascension (roughly corresponding to the Galactic anti-center)
Chart showing the equatorial orientation and location of Large Scale Structure in the local Universe. The image can be directly compared with the Martha Haynes (Cornell U.) redshift survey
images. Here for example is the sky distribution for galaxies with a redshift < 12,000 km/s (z < 0.04)
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