Great Observatories

Great Observatories

NASA's four major orbiting observatories launched between 1990 and 2003. In chronological order of launch, they are: the Hubble Space Telescope (HST), observing at ultraviolet and optical wavelengths; the Compton Gamma Ray Observatory (CGRO); the Chandra X-Ray Observatory, which originally was to form part of the more ambitious Advanced X-Ray Astrophysics Facility (see AXAF); and the Spitzer Space Telescope, formerly known as the Space Infrared Telescope Facility. Of the four satellites, only the Compton Gamma Ray Observatory had ended its mission by the start of 2005. In June 2004 NASA announced that the three Great Observatories still in orbit would collaborate with the European Space Agency's XMM-Newton satellite and some of the best groundbased observatories on a survey of deep sky objects called the Great Observatories Origins Deep Survey (GOODS). This survey will focus on two 150-square-arcminute portions of sky, one in the center of the Hubble Deep Field North, the other in the Chandra Deep Field South. GOODS will provide a multi-wavelength analysis of these regions to supply us with a rich legacy of data that will extend our knowledge about the remote and early universe.
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Using data from NASAs Great Observatories, astronomers have found the best evidence yet for cosmic seeds in the early universe that should grow into supermassive black holes.
The discovery comes from the Frontier Fields program, which is pushing the limits of how far back we can see into the distant universe using NASA's multi-wavelength suite of Great Observatories.
To identify the far-flung galaxies and study them in detail, the research team used three of the largest Hubble programs, the 3D-HST survey, the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey and the Great Observatories Origins Deep Survey.
It is the fourth and final of the NASA Great Observatories program.
Although NASA's Great Observatories had surveyed and examined the sky from gamma rays (Compton) to the infrared (Spitzer), the UV window was virgin territory.
He died on 21 August 1995 at Chicago and in 1999 NASA named the third of its four Great Observatories after Chandrasekhar.
The second of NASA's Great Observatories, the science satellite was at the time the heaviest astrophysical payload ever placed in orbit by a shuttle, and the delicate operation ended up requiring an unplanned spacewalk to fully deploy the observatory.
If it's an in-depth history of telescopes and observatories which is needed to fill a college-level or even a public library holding, it should be the weighty and visually stunning GREAT OBSERVATORIES OF THE WORLD (1554070554 $59.
The telescope is part of Nasa's series of what it calls its Great Observatories, which also includes the Compton Gamma Ray Observatory, the Chandra X-ray Observatory, and the Spitzer Space Telescope.
If it's an in-depth history of telescopes and observatories which is needed to fill a college-level or even a public library holding, it should be the weighty and visually stunning GREAT OBSERVATORIES OF THE WORLD, which tells the history and development of nearly 40 of the world's preeminent observatories, 10 space-based observatories, and 11 notable telescopes and arrays.
And then there's NASA's Great Observatories Program.
Known as the Great Observatories Origins Deep Survey (GOODS), the coordinated effort focuses on two regions of the heavens.

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