
	Where results make sense

Topic: Sloan Digital Sky Survey

Related Topics

Astronomical naming conventions

Timeline of astronomical maps, catalogs, and surveys

2003

2004

List of traditional star names

In the News (Sat 19 Dec 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	Encyclopedia: Sloan Digital Sky Survey (Site not responding. Last check: 2007-10-22)
		The Sloan Digital Sky Survey or SDSS is a major redshift survey using a dedicated 2.5-m wide-angle optical telescope at Apache Point Observatory in New Mexico.
		In astronomy, a redshift survey is a survey of a section of the sky to measure the redshift of astronomical objects.
		The results of the SDSS are electronically available to the scientific community and the general public, both as images and as precise catalogs of all objects discovered.
	www.nationmaster.com /encyclopedia/Sloan-Digital-Sky-Survey (471 words)

	Sloan Digital Sky Survey
		As the survey progresses, the data are released to the scientific community and the general public in annual increments.
		Sloan Foundation, the Participating Institutions, the National Science Foundation, the U.S. Department of Energy, the National Aeronautics and Space Administration, the Japanese Monbukagakusho, the Max Planck Society, and the Higher Education Funding Council for England.
		The SDSS is managed by the Astrophysical Research Consortium for the Participating Institutions.
	www.sdss.org (360 words)

	Universe Today - Sloan Digital Sky Survey, Part II
		Sloan Digital Sky Survey, Part II Summary - (Jul 12, 2005) The Sloan Digital Sky Survey (SDSS) is a comprehensive view of the night sky gathered by a dedicated 2.5 m telescope in New Mexico.
		SDSS II will be a new survey beginning in 2008, and consisting of three parts: a continued mapping of deep space to image distant galaxies and quasars; a detailed survey of our own Milky Way galaxy; and a study of supernovae, to try and help pin down the mysterious dark energy accelerating our Universe.
		The Sloan Digital Sky Survey is the most ambitious astronomical survey project ever undertaken, already having measured precise brightnesses and positions for hundreds of millions of galaxies, stars and quasars during the last five years.
	www.universetoday.com /am/publish/sdss2_map_universe_milkyway.html (1075 words)

	The Sloan Digital Sky Survey: Overview and Operations
		The Sloan Digital Sky Survey (hereafter SDSS) is a digital imaging and spectroscopic data bank of 25 percent of the celestial sphere, covering most of the sky above galactic latitude of 30 degrees and visible from New Mexico.
		The SDSS telescope is enclosed by a wind baffle which inhibits vibration despite the absence of an enclosure building; the baffle corotates with, but does not touch, the telescope.
		The Sloan Digital Sky Survey (SDSS) is a joint project of the University of Chicago, Fermilab, the Institute for Advanced Study, the Japan Participation Group, the Johns Hopkins University, the Max-Planck-Institute for Astronomy, Princeton University, the United States Naval Observatory, and the University of Washington.
	www.mso.anu.edu.au /DunkIsland/Proceedings/Margon (1357 words)

	Sloan Digital Sky Survey’s Stellar Successes (Site not responding. Last check: 2007-10-22)
		The Sloan Digital Sky Survey (SDSS), the subject of newcomer #5, is the most ambitious astronomical survey project ever undertaken.
		SDSS researchers have also looked at the dynamical behavior of thousands of satellite galaxies orbiting around giant parents.
		The colors of asteroids, revealed by SDSS, show that the population between Mars and Jupiter is spatially separated into two types: an inner belt of rocky asteroids, and an outer zone of carbonaceous bodies.
	www.sciencewatch.com /march-april2004/sw_march-april2004_page6.htm (888 words)

	The Sloan Digital Sky Survey and its Archive
		The SDSS is the successor to the Palomar Observatory Sky Survey (POSS), which provided a standard reference data set to all of astronomy for the last 40 years.
		The SDSS is a collaboration between the University of Chicago, Princeton University, the Johns Hopkins University, the University of Washington, Fermi National Accelerator Laboratory, the Japanese Participation Group, the United States Naval Observatory, and the Institute for Advanced Study, Princeton, with additional funding provided by the Alfred P. Sloan Foundation, NSF and NASA.
		The photometric survey is produced by drift scan imaging of 10,000 square degrees centered on the North Galactic Cap using five broadband filters that range from the ultraviolet to the infrared.
	adass.org /adass/proceedings/adass99/O1-02 (4950 words)

	Scientists Of Sloan Digital Sky Survey Discover Most Distant Quasar
		Sky Survey astronomer Michael Strauss of Princeton University, Fan's faculty advisor, described the discovery of the most distant of all quasars -- compact yet luminous objects thought to be powered by super-massive fl holes.
		The ultimate goal of the Sky Survey, an international collaboration of more than 100 scientists and engineers, is to map one quarter of the sky and create a systematic, three-dimensional picture of the universe 100 times larger than in previous surveys.
		Participating institutions in the Sloan Digital Sky Survey include The University of Chicago, Fermilab, the Institute for Advanced Study, the Japanese Participation Group, The Johns Hopkins University, Princeton University, the United States Naval Observatory and the University of Washington.
	www.sciencedaily.com /releases/1998/12/981210080913.htm (1862 words)

	The 3rd Release of the Sloan Digital Sky Survey Moving Object Catalog
		The purpose of this catalog (the Sloan Digital Sky Survey Moving Object Catalog, hereafter SDSSMOC) is to promptly distribute data for moving objects detected by SDSS.
		While some of these data have already been released as a part of regular SDSS Data Releases, it may be more convenient for many users to have the relevant data in a simple text file.
		The sky region covered by a run can be obtained using the above information for the (0,0) pixel in camera column 1, and the layout of the SDSS imaging camera.
	www.astro.washington.edu /ivezic/sdssmoc/sdssmoc.html (2026 words)

	Carnegie Mellon Scientist and Sloan Digital Sky Survey investigator plays key role in discovering independent physical ...
		The SDSS is mapping in detail one-quarter of the entire sky, determining the positions and brightness of 100 million celestial objects.
		The combination of ground-based optical data (SDSS) and space-based microwave (WMAP) data gave the investigators a new window into the properties of dark energy, according to the team, which also included investigators from Fermilab, University of Hawaii, University of Arizona, and the University of Pennsylvania.
		In fact, the discoveries were made in 3,400 square degrees of the sky surveyed by the SDSS.
	www.cmu.edu /cmnews/extra/030725_darkenergy.html (686 words)

	Sloan Digital Sky Survey
		Finally, the SDSS research found that the data are consistent with the detailed predictions of the inflation model.
		The SDSS is the most ambitious astronomical survey ever undertaken, with more than 200 astronomers at 13 institutions around the world.
		Strauss said the SDSS is approaching the halfway point in its goal of measuring one million galaxy and quasar redshifts.
	space.mit.edu /home/tegmark/sdss/release031022.html (1295 words)

	Sloan Digital Sky Survey: Early Data Release
		This survey, the Sloan Digital Sky Survey (SDSS) [York et al., 2000], is now underway, having begun standard operations in April 2000, and is planned to last five years.
		The institutions involved in the survey and the survey funding sources may be found at the end of this paper.
		Then, the sky level is estimated by median-smoothing the frame image on a scale of approximately 100 arcsec; the resulting ``local'' sky image is subtracted from the frame (remember that a global sky determined on an entire frame has already been subtracted).
	www.sdss.org /dr3/algorithms/edrpaper.html (15482 words)

	Sloan Digital Sky Survey photos
		In the background is the 3.5 meter telescope and a smaller one, and in the foreground is the.6 meter monitor telescope and the 2.5 meter Sloan Digital Sky Survey telescope.
		The Sloan telescope is an alt-az mounting (altitude-azimuth), meaning it has a vertical rotation axis (the azimuth axis) and a horizontal one (the altitude axis).
		The Sloan camera is not intended to take still pictures of the night sky, but is a drift camera that records swaths of sky in continuous motion.
	www.bartoszekeng.com /sdss/sdss.htm (1224 words)

	Star/galaxy classification for Sloan Digital Sky Survey (Site not responding. Last check: 2007-10-22)
		The Sloan Digital Sky Survey (SDSS), a large-scale digital survey of the northern galactic cap, is currently underway.
		The aim of the survey is to produce a detailed photometric map of half of the northern sky at about the 23rd magnitude.
		Because of the large amount of incoming data from the survey, efficient and robust data processing is a necessary component of the survey.
	www.tigr.org /~salzberg/murthy_thesis/node47.html (392 words)

	The Sloan Digital Sky Survey Archive (Site not responding. Last check: 2007-10-22)
		In a few years it may be much easier to "dial-up" a part of the sky, when we need a rapid observation than wait for several months to access a (sometimes quite small) telescope.
		With several projects in multiple wavelengths under way, like the SDSS, 2MASS, GSC-2, GALEX, POSS2, ROSAT, FIRST and DENIS projects, each surveying a large fraction of the sky, the concept of having a "Digital Sky", with multiple, TB size databases interoperating in a seamless fashion is no longer an outlandish idea.
		The Sloan Digital Sky Survey, hereafter the SDSS, is a project to digitally map about 1/2 of the Northern sky in five filter bands from UV to the near IR, and is expected to detect over 200 million objects in this area.
	www.aas.org /publications/baas/v30n2/aas192/abs/S064005.html (295 words)

	Sloan Digital Sky Survey Study Confirms Dark Matter \| SpaceRef - Your Space Reference
		A new study using the Sloan Digital Sky Survey provides the most direct evidence yet that galaxies reside at the center of giant, dark matter concentrations that may be 50 times larger than the visible galaxy itself.
		Prada and his colleagues observed 250,000 galaxies from the Sloan Digital Sky Survey (SDSS) telescope to find good candidates for a study of the gravitational effects of dark matter.
		The Sloan Digital Sky Survey (sdss.org) will map in detail one-quarter of the entire sky, determining the positions and absolute brightness of 100 million celestial objects.
	www.spaceref.com /news/viewpr.html?pid=11576 (808 words)

	The 2.5-meter Telescope
		One stripe of the survey is composed of two TDI scans, one centered on the column labeled C1 through the boresight B1, the other on the column labeled C2 through B2.
		The moving mass of the SDSS 2.5-m telescope is 15,500 kg, which is light enough that exotic bearing technology is hardly required.
		Wind baffle surfaces that are well coupled to the sky but which must be fl in the visible to absorb scattered light are covered with fl chrome tape, a selective emitter with high emissivity in the visible and near IR and low emissivity in the thermal IR.
	www.astro.princeton.edu /PBOOK/telescop/telescop.htm (8813 words)

	Sloan Digital Sky Survey - Wikipedia, the free encyclopedia
		SDSS uses a dedicated 2.5-m wide-angle optical telescope, and takes images through five filters (named u, g, r, i and z).
		Date Relase 4 or DR4 was released in June 2005 covering 6, 670 square degrees and nearly 850,000 spectra
		The SDSS website has a full list of these publications covering distant quasars at the limits of the observable universe, the distribution of galaxies, the properties of stars in our own galaxy and also subjects such as dark matter and dark energy in the universe.
	en.wikipedia.org /wiki/Sloan_Digital_Sky_Survey (497 words)

	The Sloan Digital Sky Survey and its Archive
		The SDSS project thus consists of not only the building of the hardware, and reducing and calibrating the data, but also includes software to classify, index, and archive the data so that many scientists can use it.
		With the SDSS archive it will be easy for astronomers to pose complex queries to the catalog and get answers within seconds, and within minutes if the query requires a complete search of the database.
		The SDSS datasets pose interesting challenges for automatically placing and managing the data, for executing complex queries against a high-dimensional data space, and for supporting complex user-defined distance and classification metrics.
	www.adass.org /adass/proceedings/adass99/O1-02 (4950 words)

	Sloan Digital Sky Survey Discovers its First Comet (Site not responding. Last check: 2007-10-22)
		The Sloan Digital Sky Survey has found its first new comet, the latest in a series of interesting treasures mined from the Survey's test-year data.
		The Sky Survey seems to be acquiring a reputation for finding unusual and interesting objects during its ongoing test phase.
		The SDSS is first and foremost a survey of distant galaxies and quasars in an effort to map the large-scale structure of the universe, and it has already distinguished itself in this arena by finding some of the most distant quasars known.
	www2.jpl.nasa.gov /neo/news/news060.html (548 words)

	A New Survey: SDSS-II Will Map The Universe, The Milky Way And Dark Energy
		Constance Rockosi, a graduate student at the University of Chicago and a member of the multi-institutional team that built the digital scanning camera for the Sloan Digital Sky Survey, checks the status of the instrument during its first on-the-sky trial runs in May 1998.
		SDSS Uses 200,000 Quasars to Confirm Einstein's Prediction of Cosmic Magnification (May 18, 2005) -- Applying cutting edge computer science to a wealth of new astronomical data, researchers from the Sloan Digital Sky Survey (SDSS) reported today the first robust detection of cosmic magnification on...
		ABOUT THE SLOAN DIGITAL SKY SURVEY II Funding for SDSS-II has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, the U.S. Department of Energy, the Japanese Monbukagakusho, and the Max Planck Society.
	www.sciencedaily.com /releases/2005/07/050719001643.htm (1252 words)

	Sloan Digital Sky Survey detects physical evidence for Dark Energy
		With the combination of results from these two large sky surveys, this discovery provides physical evidence for the existence of dark energy; a result that complements earlier work on the acceleration of the universe as measured from distant supernovae.
		SDSS collaborator Connolly said if the depth of the gravitational well decreases while the photon travels through it then the photon would exit with slightly more energy.
		A unique aspect of the SDSS data is its ability to accurately measure the distances to all galaxies from photographic analysis of their photometric redshifts.
	www.spacedaily.com /news/darkmatter-03i.html (1446 words)

	Sloan Digital Sky Survey: Early Data Release (Site not responding. Last check: 2007-10-22)
		We present the means by which these data are distributed to the astronomical community, descriptions of the hardware used to obtain the data, the software used for processing the data, the measured quantities for each observed object, and an overview of the properties of this dataset.
		In order to achieve the highest level of homogeneity in these two redshift samples, it was concluded that a dedicated imaging survey would be needed from which target galaxies and quasars would be selected, and that imaging and spectroscopy could be done with the same telescope switching between the two observing modes.
		The data are processed through a series of interlocking pipelines which find the objects in the imaging data, measure their properties, apply astrometric and photometric calibrations, select objects for spectroscopic followup, extract and calibrate the spectra, and derive redshifts and spectral types from the spectra.
	skyserver.sdss.org /edr/en/sdss/edrpaper/edrpaper.htm (13370 words)

	SDSS Data Release 1
		www.sdss.org for general information) will map one-quarter of the entire sky and perform a redshift survey of galaxies, quasars and stars.
		As of September 27 2004, Data Release 3 (DR3) is available, with more sky coverage and better reductions.
		Please also note how to refer to SDSS sources in your publications using the proper IAU nomenclature for SDSS sources.
	www.sdss.org /dr1 (221 words)

	The Photometric Camera and the CCDs
		They should allow tying the astrometric system of the survey eventually to the Hipparcos reference frame with an accuracy of order 30 mas locally, and if the survey could be redone in 10 years' time or so, would provide a wealth of proper motion data for faint sources.
		In the g', r', and i' bands the sky levels are such that digitizing at roughly 5 electrons/(AD unit) results in a step which is small compared to the standard deviation in the background, and accommodates with 16 bits the full 300,000 electron full well of the device.
		At the lower level, which is somewhat less than the ultraviolet sky level, the net transfer efficiency is 86 percent from the upper center of the chip (the pixel with the largest number of transfers).
	www.astro.princeton.edu /PBOOK/camera/camera.htm (9815 words)

	Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations (Site not responding. Last check: 2007-10-22)
		This paper describes the discovery of seven dwarf objects of spectral type L (objects cooler than the latest M dwarfs) in commissioning imaging data taken by the Sloan Digital Sky Survey (SDSS).
		Comparison of the SDSS and the Two Micron All Sky Survey (2MASS) photometry for several of these objects indicates the presence of significant opacity at optical wavelengths.
		The L dwarfs are shown to occupy a distinctive region of color-color space as measured in the SDSS filters, which should enables their identification in a straightforward way.
	www.osti.gov /energycitations/product.biblio.jsp?osti_id=20215785 (280 words)

	APOD: June 17, 1998 - The Sloan Digital Sky Survey Telescope (Site not responding. Last check: 2007-10-22)
		2.5-meter telescope poised to create the most ambitious sky map in the history of astronomy.
		SDSS will catalog one quarter of the sky down past 23rd
		However, the SDSS may one day be remembered not only for the hundreds of millions of objects which it could see, but for how it indicated the
	antwrp.gsfc.nasa.gov /apod/ap980617.html (126 words)

Try your search on: Qwika (all wikis)