NICS (Near Infrared Camera Spectrometer) is the TNG infrared (0.9-2.5 µm) multimode instrument which is based on a HgCdTe Hawaii 1024x1024 array. Its observing capabilities include imaging (4.2' x 4.2' f.o.v.), high-throughput low resolution spectroscopy (RS=50-500), medium resolution spectoscopy (max-R=2500), imaging polarimetry, spectropolarimetry and, when coupled to the adaptive optics module, nearly diffraction limited imaging.
OIG is a CCD camera for direct imaging at optical wavelengths (between 0.32 nd 1.1 microns) for the TNG. It is mounted on the Nasmyth A Adapter interface. OIG is designed to host a variety of CCD chips or mosaics for a field of view up to 10 arcmin. At the moment it is equipped with a mosaic of two thinned and back-illuminated EEV 42-80 CCDs with 2048 x 4096 pixels each (pixel size of 13.5 microns). The resulting pixel scale is 0.072 arcsec/pix for a total field of view of about 4.9 x 4.9 arcmin.
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> Provenance: 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.. This is a service of NASA HEASARC.
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