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The Spitzer Space Telescope, NASA's Great Observatory for infrared astronomy, was launched 2003 August 25 and is returning excellent scientific data from its Earth-trailing solar orbit. Spitzer combines the intrinsic sensitivity achievable with a cryogenic telescope in space with the great imaging and spectroscopic power of modern detector arrays to provide(More)
The James Webb Space Telescope (JWST) is a large (6.6 m), cold (<50 K), infrared (IR)-optimized space observatory that will be launched early in the next decade into orbit around the second Earth–Sun Lagrange point. The observatory will have four instruments: a near-IR camera, a near-IR multiobject spectrograph, and a tunable filter imager will cover the(More)
A new grid of 65 faint near-infrared standard stars is presented. They are spread around the sky, lie between 10th and 12th mag at K, and are measured to precisions better than 0.005 mag in the J, H, K and Ks bands; the latter is a medium-band modiied K. A secondary list of red stars suitable for determining color transformations between photometric systems(More)
The SIRTF Nearby Galaxy Survey is a comprehensive infrared imaging and spectroscopic survey of 75 nearby galaxies. Its primary goal is to characterize the infrared emission of galaxies and their principal infrared-emitting components, across a broad range of galaxy properties and star formation environments. SINGS will provide new insights into the physical(More)
Relative to ground-based telescopes, the James Webb Space Telescope (JWST) will have a substantial sensitivity advantage in the 2.2-5 µm wavelength range where brown dwarfs and hot Jupiters are thought to have significant brightness enhancements. To facilitate high contrast imaging within this band, the Near-Infrared Camera (NIRCAM) will employ a Lyot(More)
We report the first near-infrared (NIR) imaging of a circumstellar annular disk around the young (∼8 Myr), Vega-like star HR 4796A. NICMOS coronagraph observations at 1.1 and 1.6 mm reveal a ringlike symmetrical structure that peaks in reflected intensity (∼70 AU) from the central A0 V star. The ring geometry, 1Љ .05 ‫ע‬ 0Љ .02 with an inclination of and a(More)
This paper presents data obtained during the NICMOS Guaranteed Time Observations of a portion of the Hubble Deep Field. The data are in a catalog format similar to the publication of the original WFPC2 Hubble Deep Field program (Williams et al.). The catalog contains 342 objects in a 49A .1 ] 48A .4 subÐeld of the total observed Ðeld, 235 of which are(More)
The Open University's repository of research publications and other research outputs SDSS-III: massive spectroscopic surveys of the distant universe, the Milky Way, and extra-solar planetary systems Journal Article Eisenstein et al. ABSTRACT Building on the legacy of the Sloan Digital Sky Survey (SDSS-I and II), SDSS-III is a program of four spectroscopic(More)
We have obtained images of the Trapezium Cluster (140 ′′ × 140 ′′ ; 0.3 pc × 0.3 pc) with the Hubble Space Telescope Near-Infrared Camera and Multi-Object Spectrometer (NICMOS). Combining these data with new ground-based K-band spectra (R = 800) and existing spectral types and photometry, we have constructed an H-R diagram and used it and other arguments to(More)
We describe the data reduction algorithms for the Multiband Imaging Photometer for SIRTF (MIPS) instrument. These algorithms are based on extensive preflight testing and modeling of the Si:As (24 µm) and Ge:Ga (70 and 160 µm) arrays in MIPS. The behaviors we describe are typical of state-of-the-art infrared focal planes operated in the low backgrounds of(More)