2 Micron All Sky Survey - 2MASS

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2MASS is an all sky survey that used both northern and southern hemisphere telescopes to cover the whole sky from 1997 through 2001 with a final post processing release in 2003.


2MASS used telescopes in both the northern and southern hemisphers to cover the whole sky.  Here is a composite photo of the the Northern 2MASS telescope at Mt. Hopkins and southern hemisphere (Cerro Tololo/CTIO, Chile) ground based telescopes to obtain data from the whole sky. You can actually see a live webcam pointed at the Chile site using  this link to the Skynet remote telescope network. Wavelengths around 2 microns, J (1.25 um), H (1.65 um), and Ks (2.17 um) in the Near Infrared (NIR) were used in this survey which produced over 500 million sources in the point source catalog and 1.6 million sources in the extended source catalog (I don't know what this means yet:) These catalogs are publicly available.

Probabley better in bullet form.

Add pics of actual scopes.

Add where it fits with other scopes and what it is typically used for???