Two Micron All Sky Survey (H-Band)

2MASS data were collected by uniformly scanning the entire sky in three near-infrared bands to detect and characterize point sources brighter than about 1 mJy in each band, with signal-to-noise ratio (SNR) greater than 10, using a pixel size of 2.0". This achieves an 80,000-fold improvement in sensitivity relative to earlier surveys.

2MASS used two new, highly-automated 1.3-m telescopes, one at Mt. Hopkins, AZ, and one at CTIO, Chile. Each telescope is equipped with a three-channel camera, each channel consisting of a 256 by 256 array of HgCdTe detectors, capable of observing the sky simultaneously at J (1.25 microns), H (1.65 microns), and K<sub>s</sub> (2.17 microns).

<p>2MASS images and other data products can be obtained at the <a href="https://irsa.ipac.caltech.edu/applications/2MASS/QL/">NASA/IPAC Infrared Science Archive</a>

Identifier
Source https://skyview.gsfc.nasa.gov
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_datacite&identifier=ivo://nasa.heasarc/skyview/2mass
Provenance
Creator The Two Micron All Sky Survey is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center, funded by the National Aeronautics and Space Administration and the National Science Foundation.
Publisher NASA/GSFC HEASARC
Publication Year 2018
Contact SkyView Help <Skyview@skyview.gsfc.nasa.gov>
Representation
Resource Type AstroImage
Format text/xml+votable
Coverage
Discipline Astrophysics And Astronomy