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- ID:
- ivo://fs.usno
- Title:
- United States Naval Observatory, Flagstaff Station Naming Authority
- Short Name:
- USNOFS auth
- Date:
- 11 Apr 2007 08:52:38
- Publisher:
- US Naval Observatory
- Description:
- The USNO Flagstaff Station Image and Catalogue archive provides access to digitized images of the major Schmidt photographic surveys of the sky (POSS-I, POSS-II, SERC-J, SERC-R, SERC-EJ, SERC-ER, AAO-R etc.) and to astrometric catalogues derived from these data, including USNO-A2, USNO-B1 and NOMAD. The site provides catalogue data, finding charts, image data and a merge of the three.
- ID:
- ivo://sdss.jhu/openskynode/usnob
- Title:
- US Naval Observatory B
- Short Name:
- USNOB
- Date:
- 05 Dec 2018 20:07:20
- Publisher:
- US Naval Observatory
- Description:
- The USNO-B1.0 Catalogue presents positions, proper motions, magnitudes in various optical passbands, and star/galaxy estimators for 1,045,175,762 objects derived from 3,648,832,040 separate observations. The data were taken from scans of 7,435 Schmidt plates taken from various sky surveys during the last 50 years. The catalogue is expected to be complete down to V=21; the estimated accuracies are 0.2arcsec for the positions at J2000, 0.3mag in up to 5 colors, and 85% accuracy for distinguishing stars from non-stellar objects
- ID:
- ivo://astronet.ru/cas/usnoa2
- Title:
- USNO-A V2.0, A Catalog of Astrometric Standards
- Short Name:
- usnoa2
- Date:
- 17 Jun 2006 18:44:05
- Publisher:
- Sternberg Astronomical Institute Virtual Observatory Project
- Description:
- USNO-A2.0 is a catalog of 526,280,881 stars, and is based on a re-reduction of the Precision Measuring Machine (PMM) scans that were the basis for the USNO-A1.0 catalog. The major difference between A2.0 and A1.0 is that A1.0 used the Guide Star Catalog (Lasker et al. 1986, as its reference frame whereas A2.0 uses the ICRF as realized by the USNO ACT catalog (Urban et al. 1997).
- ID:
- ivo://nasa.heasarc/vela5b
- Title:
- Vela 5B All-Sky Monitor Lightcurves
- Short Name:
- VELA5B
- Date:
- 27 Sep 2024
- Publisher:
- NASA/GSFC HEASARC
- Description:
- Data for these sources were obtained from the Vela 5B all-sky XC detector. The Vela 5B nuclear test detection satellite was part of a program run jointly by the Advanced Research Projects of the U.S. Department of Defense and the U.S.Atomic Energy Commission, managed by the U.S. Air Force. It was placed in a nearly circular orbit at a geocentric distance of ~118,000 km on 23 May 1969; the orbital period was ~112 hours. The satellite rotated about its spin axis with a ~64-sec period. The X-ray detector was located ~90 degrees from the spin axis, and so covered the celestial sphere twice per satellite orbit. Data were telemetered in 1-sec count accumulations. Vela 5B operated until 19 June 1979, although telemetry tracking was poor after mid-1976. The scintillation X-ray detector (XC) aboard Vela 5B consisted of two 1-mm-thick NaI(Tl) crystals mounted on photomultiplier tubes and covered by a 5-mil-thick beryllium window. Electronic thresholds provided two energy channels, 3-12 keV and 6-12 keV. In front of each crystal was a slat collimator providing a FWHM aperture of ~6.1x6.1 degrees. The effective detector area was ~26 sq-cm. Sensitivity to celestial sources was severely limited by the intrinsic detector background of ~36 cts/sec. The Vela 5B X-ray detector yielded ~40 cts/sec for the Crab, so 1 Vela ct/sec ~25 UFU~4.5E-10 ergs/sq-cm/sec in the 3-12 keV response band. This is a service provided by NASA HEASARC .
- ID:
- ivo://irsa.ipac/Herschel/Images/VNGS
- Title:
- Very Nearby Galaxy Survey
- Short Name:
- VNGS
- Date:
- 27 Oct 2022 19:00:00
- Publisher:
- NASA/IPAC Infrared Science Archive
- Description:
- The Very Nearby Galaxy Survey (VNGS) is a Herschel Key Program (KPGT_cwilso01_1) to measure the emission spectrum from dust as well as important cooling lines from the gaseous interstellar medium in a sample of 13 very nearby galaxies (M51, M81, NGC2403, NGC891, M83, M82, Arp220, NGC4038/39, NGC1068, NGC4151, CenA, NGC4125, and NGC205). These galaxies have been chosen to probe as wide a region in galaxy parameter space as possible while maximizing the achievable spatial resolution and are already well-studied from X-ray and optical through to radio wavelengths. The far-infrared and submillimeter wavelengths probed by Herschel are absolutely crucial for understanding the physical processes and properties of the interstellar medium, the interplay between star formation and the interstellar medium in galaxies, and how they may depend on the wider galaxian environment.
477. VGPS Archive
- ID:
- ivo://cadc.nrc.ca/VGPS
- Title:
- VGPS Archive
- Short Name:
- VGPS Archive
- Date:
- 15 Jun 2019 21:15:06
- Publisher:
- Canadian Astronomy Data Centre
- Description:
- ID:
- ivo://gov.nasa.gsfc.nssdc/viking1
- Title:
- Viking 1 Biology Experiment
- Short Name:
- Viking 1 Biology
- Date:
- 24 Apr 2006 19:57:18
- Publisher:
- NASA
- Description:
- Viking 1 Gas Exchange, Labeled Release, and Pyrolytic Release Data on Microfilm. These data, supplied by the investigation team, are on 16- mm microfilm and consist of descriptions of the commands that were sent to operate the three instruments, and tabulations of raw and reduced data returned. The command data include Mars time for each experiment sequence, the commands sent, predicted data points for each command file that were used to time tag the data when it came back from the instrument, and a summary of the major events of each command sequence.
- ID:
- ivo://gov.nasa.gsfc.nssdc/viking2
- Title:
- Viking 2 Biology Experiment
- Short Name:
- Viking 2 Biology
- Date:
- 24 Apr 2006 19:43:32
- Publisher:
- NASA
- Description:
- Viking 2 Gas Exchange, Labeled Release, and Pyrolytic Release Data on Microfilm. These data, supplied by the investigation team, are on 16- mm microfilm and consist of descriptions of the commands that were sent to operate the three instruments, and tabulations of raw and reduced data returned. The command data include: Mars time for each experiment sequence, the commands sent, predicted data points for each command file that were used to time tag the data when it came back from the instrument, and a summary of the major events of each command sequence.
480. VizieR SIA service
- ID:
- ivo://CDS.VizieR/siap
- Title:
- VizieR SIA service
- Short Name:
- VizieR SIA
- Date:
- 05 May 2016 18:00:00
- Publisher:
- CDS VizieR service
- Description:
- This service provides SIA access for VizieR associated data in FITS format.