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- ID:
- ivo://astronet.ru/cas/twomass-psc
- Title:
- The 2MASS All-Sky Catalog
- Short Name:
- twomass-psc
- Date:
- 17 Jun 2006 18:44:05
- Publisher:
- Sternberg Astronomical Institute Virtual Observatory Project
- Description:
- The Two Micron All Sky Survey (2MASS) project is designed to close the gap between our current technical capability and our knowledge of the near-infrared sky. In addition to providing a context for the interpretation of results obtained at infrared and other wavelengths, 2MASS will provide direct answers to immediate questions on the large-scale structure of the Milky Way and the Local Universe. To achieve these goals, 2MASS is 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 will achieve an 80,000-fold improvement in sensitivity relative to earlier surveys. 2MASS uses 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 256x256 array of HgCdTe detectors, capable of observing the sky simultaneously at J (1.25 {mu}m), H (1.65 {mu}m), and Ks (2.17 {mu}m), to a 3{sigma} limiting sensitivity of 17.1, 16.4 and 15.3mag in the three bands. The 2MASS arrays image the sky while the telescopes scan smoothly in declination at a rate of ~1' per second. The 2MASS data "tiles" are 6 deg. long in the declination direction and one camera frame (8.5') wide. The camera field-of-view shifts by ~1/6 of a frame in declination from frame-to-frame. The camera images each point on the sky six times for a total integration time of 7.8 s, with sub-pixel "dithering", which improves the ultimate spatial resolution of the final Atlas Images. The University of Massachusetts (UMass) is responsible for the overall management of the project, and for developing the infrared cameras and on-site computing systems at both facilities. The Infrared Processing and Analysis Center (IPAC) is responsible for all data processing through the Production Pipeline, and construction and distribution of the data products. The 2MASS project involves the participation of members of the Science Team from several different institutions. The 2MASS project is funding by the National Aeronautics and Space Administration (NASA) and the National Science Foundation (NSF). Acknowledging 2MASS in publications: Please include the following in any published material that makes use of the 2MASS data products: "This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation."
- ID:
- ivo://astronet.ru/cas/twomass-xsc
- Title:
- The 2MASS All-Sky Catalog
- Short Name:
- twomass-xsc
- Date:
- 17 Jun 2006 18:44:05
- Publisher:
- Sternberg Astronomical Institute Virtual Observatory Project
- Description:
- The Two Micron All Sky Survey (2MASS) project is designed to close the gap between our current technical capability and our knowledge of the near-infrared sky. In addition to providing a context for the interpretation of results obtained at infrared and other wavelengths, 2MASS will provide direct answers to immediate questions on the large-scale structure of the Milky Way and the Local Universe. To achieve these goals, 2MASS is 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 will achieve an 80,000-fold improvement in sensitivity relative to earlier surveys. 2MASS uses 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 256x256 array of HgCdTe detectors, capable of observing the sky simultaneously at J (1.25 {mu}m), H (1.65 {mu}m), and Ks (2.17 {mu}m), to a 3{sigma} limiting sensitivity of 17.1, 16.4 and 15.3mag in the three bands. The 2MASS arrays image the sky while the telescopes scan smoothly in declination at a rate of ~1' per second. The 2MASS data "tiles" are 6 deg. long in the declination direction and one camera frame (8.5') wide. The camera field-of-view shifts by ~1/6 of a frame in declination from frame-to-frame. The camera images each point on the sky six times for a total integration time of 7.8 s, with sub-pixel "dithering", which improves the ultimate spatial resolution of the final Atlas Images. The University of Massachusetts (UMass) is responsible for the overall management of the project, and for developing the infrared cameras and on-site computing systems at both facilities. The Infrared Processing and Analysis Center (IPAC) is responsible for all data processing through the Production Pipeline, and construction and distribution of the data products. The 2MASS project involves the participation of members of the Science Team from several different institutions. The 2MASS project is funding by the National Aeronautics and Space Administration (NASA) and the National Science Foundation (NSF). Acknowledging 2MASS in publications: Please include the following in any published material that makes use of the 2MASS data products: "This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation."
- ID:
- ivo://irsa.ipac/MAST/Scrapbook
- Title:
- The MAST Image Scrapbook
- Short Name:
- MAST-Scrapbook
- Date:
- 16 Mar 2017 01:00:00
- Publisher:
- NASA/IPAC Infrared Science Archive
- Description:
- The MAST Spectral/Image Scrapbook is designed to allow users to take a quick look at sample data in the MAST archive of a particular astronomical object of interest. It is set up here as an interoperability project between IRSA and MAST.
- ID:
- ivo://irsa.ipac/MSX/Images
- Title:
- The Midcourse Space Experiment Data Atlas
- Short Name:
- MSX
- Date:
- 27 Oct 2022 19:00:00
- Publisher:
- NASA/IPAC Infrared Science Archive
- Description:
- The Midcourse Space Experiment (MSX), a Ballistic Missile Defense Organization satellite, was launched in April 1996. The first ten months of the mission were devoted to mid-infrared observations with a solid hydrogen-cooled telescope. This instrument had five line-scanned focal plane arrays that spanned the spectral region from 4.2 to 26 microns.
- ID:
- ivo://irsa.ipac/IRAS/Images/MIGA
- Title:
- The Mid-Infrared Galaxy Atlas
- Short Name:
- MIGA
- Date:
- 27 Oct 2022 19:00:00
- Publisher:
- NASA/IPAC Infrared Science Archive
- Description:
- The Mid-Infrared Galaxy Atlas (MIGA) is a high resolution image atlas of the Galactic plane at 12 microns and 25 microns, it has been produced using the HIRES processed infrared data from the IRAS satellite. It is a counterpart to the far-infrared IRAS Galaxy Atlas (IGA) and the Extended IRAS Galaxy Atlas (EIGA).
- ID:
- ivo://ned.ipac/NED
- Title:
- The NASA/IPAC Extragalactic Database
- Short Name:
- NED
- Date:
- 10 Jun 2021 18:18:18
- Publisher:
- NASA/IPAC
- Description:
- The NASA/IPAC Extragalactic Database (NED) provides a comprehensive fusion of multi-wavelength data for hundreds of millions of objects located beyond the Milky Way galaxy. As new observations are published in NASA mission archives, journal articles and sky survey catalogs, they are cross-identified with prior measurements and integrated in a unified database. Numerous derived quantities are also provided to facilitate scientific research. For more information see http://ned.ipac.caltech.edu/
- ID:
- ivo://ned.ipac/Basic_Data_By_Reference
- Title:
- The NASA/IPAC Extragalactic Database
- Short Name:
- NED_by_refcode
- Date:
- 10 Jun 2021 18:17:21
- Publisher:
- NASA/IPAC
- Description:
- NED service to query for Objects by Reference Code: The NASA/IPAC Extragalactic Database (NED) provides a comprehensive fusion of multi-wavelength data for hundreds of millions of objects located beyond the Milky Way galaxy. This service searches NED's master list of extragalactic objects by (19 digit) journal reference code. It returns object names, positions, and redshifts if available. It also returns counts of bibliographic references, notes, photometry, positions, redshifts, diameters, and positional associations.
- ID:
- ivo://astronet.ru/cas/nomad
- Title:
- The Naval Observatory Merged Astrometric Dataset
- Short Name:
- nomad
- Date:
- 17 Jun 2006 18:44:05
- Publisher:
- Sternberg Astronomical Institute Virtual Observatory Project
- Description:
- The U.S. Naval Observatory (USNO) announces the release of the first version of the Naval Observatory Merged Astrometric Dataset (NOMAD). The almost 100 GB dataset contains astrometric and photometric data for about 1.1 billion stars derived from the Hipparcos, Tycho-2, UCAC2, Yellow-Blue 6, and USNO-B catalogs for astrometry and optical photometry, supplemented by 2MASS near-infrared photometry. For each unique star the "best" astrometric and photometric data are chosen from the source catalogs and merged into a single dataset. A sequence of priorities is followed and NOMAD contains flags to identify the source catalogs and gives cross-reference identifications. This first release of NOMAD is not a compiled catalog; that is, if a star is identified in more than 1 of the above mentioned catalogs, only 1 catalog entry is chosen. Thus the local and global systematic errors of the various source catalogs will be present in this version of NOMAD. All source catalogs astrometric data are on the International Celestial Reference System within the limitations of the source catalogs. Catalogs used: Hipparcos Catalogue: Positions, proper motions and errors are used; however, no parallaxes are included in NOMAD. Tycho-2: is a compiled catalog with proper motions derived from the combination of Hipparcos satellite measures (mainly its star tracker data) and over 100 ground-based astrometric catalogs which provided the early epoch data. Most of the Tycho B and V magnitudes (which includes Hipparcos stars) went into NOMAD as well. UCAC2: is also a compiled catalog, including all catalogs used for Tycho-2 (thus also including Tycho and Hipparcos astrometric data), plus the recent epoch ground-based observations of the UCAC project. However, only 86\% of the sky are covered by UCAC2 (the north celestial pole area is missing). For stars not in USNO-B, the UCAC2 magnitude has been used as "R" photometry value, although the UCAC2 bandpass is between V and R. YB6: (Yellow-Blue catalog version 6) is unpublished data obtained from complete scans of the NPM and SPM plates performed on the PMM at USNO, Flagstaff Station. The limiting magnitude is about 18 and YB6 is the major source of faint B and V magnitudes in NOMAD. 2MASS: the near IR photometry without errors or flags has been copied into NOMAD. For those stars without optical counterparts, the 2MASS astrometric information was used (no proper motions). USNO-B: provides positions and proper motions for most faint stars in NOMAD. Most R photometry in NOMAD comes from this catalog. For more details, see the catalog introductions for each individual catalog used in NOMAD. NOMAD is not a compiled catalog, no average values are taken if a star appears in more than 1 source catalog. Each astrometric and photometric entry in NOMAD is taken from a specific source catalog. The priority order is as follows: astrometry brighter than 8 mag: Hipparcos Tycho-2 UCAC2 astrometry of fainter stars: Hipparcos UCAC2 Tycho-2 USNO-B YB6 2MASS photometry: optical Tycho-2 (incl. Hipparcos stars) YB6 USNO-B UCAC2 photometry: near IR 2MASS
- ID:
- ivo://org.gavo.dc/theossa/q/ssa
- Title:
- TheoSSA - Theoretical Stellar Spectra Access
- Short Name:
- theossa
- Date:
- 15 Aug 2024 15:17:00
- Publisher:
- The GAVO DC team
- Description:
- TheoSSA provides spectral energy distributions based on model atmosphere calculations. Currently, we serve results obtained using the Tübingen NLTE Model Atmosphere Package (TMAP) for hot compact stars.