This database is the Third Small Astronomy Satellite (SAS-3) Y-Axis Pointed Observation Log. It identifies possible pointed observations of celestial X-ray sources which were performed with the y-axis detectors of the SAS-3 X-Ray Observatory. This log was compiled (by R. Kelley, P. Goetz and L. Petro) from notes made at the time of the observations and it is expected that it is neither complete nor fully accurate. Possible errors in the log are (i) the misclassification of an observation as a pointed observation when it was either a spinning or dither observation and (ii) inaccuracy of the dates and times of the start and end of an observation. In addition, as described in the HEASARC_Updates section, the HEASARC added some additional information when creating this database. Further information about the SAS-3 detectors and their fields of view can be found at: <a href="http://heasarc.gsfc.nasa.gov/docs/sas3/sas3_about.html">http://heasarc.gsfc.nasa.gov/docs/sas3/sas3_about.html</a> Disclaimer: The HEASARC is aware of certain inconsistencies between the Start_date, End_date, and Duration fields for a number of rows in this database table. They appear to be errors present in the original table. Except for one entry where the HEASARC corrected an error where there was a near-certainty which parameter was incorrect (as noted in the 'HEASARC_Updates' section of this documentation), these inconsistencies have been left as they were in the original table. This database table was released by the HEASARC in June 2000, based on the SAS-3 Y-Axis pointed Observation Log (available from the NSSDC as dataset ID 75-037A-02B), together with some additional information provided by the HEASARC itself. This is a service provided by NASA HEASARC .
The full sky 100 micron map is a reprocessed composite of the COBE/DIRBE
and IRAS/ISSA maps, with the zodiacal foreground and confirmed point
sources removed. Artifacts from the IRAS scan pattern were removed.
The result of these manipulations is a map with DIRBE-quality calibration
and IR AS resolution. Provenance: David J. Schlegel, Douglas P. Finkbeiner
and Marc Davis, Princeton University and University of California, Berkeley. This is a service of NASA HEASARC.
The SimDAL repository hosts numerical projects descriptions as standard XML documents following the Simulation Data Model serialization xsd. It allows clients to search (fulltext) for simulation projects or associated protocols of interest and get URIs towards other SimDAL components: SimDAL Search and SimDAL Data Access.
This service provides access to a modified version of the Skiff Spectral catalog.
The full catalog is available from VizieR. The table includes the standard
spectral classifications (with spaces removed) and their encoded values as described
in the IVOA note titled "An Encoding system to Represent Stellar Spectral Classes
in Archival Databases and Catalogs". The table contains roughly 450,000 targets.
Note Skiff does not list novae or supernovae.
The SkyView service at the NASA HEASARC archive
has deveoped HiPS data for the combined Swift UVOT and
XRT observations covering 2005-mid 2017.
Counts, Exposure and Intensity maps are provided for both
instruments and for the UVOT are provided in both
seven individual filters and two combined color images.
This is a service provided by NASA HEASARC.
SkyView is a Virtual Observatory on the Net. Astronomers can generate images of any portion of the sky at wavelengths in all regimes from radio to gamma-ray. Users tell
SkyView the position, scale and orientation desired, and SkyView gives users an image made to their specification. The user need not worry about transforming between
equinoxes or coordinate systesm, mosaicking submaps, rotating the image,.... SkyView handles these geometric issues and lets the user get started on astronomy.
The Sloan Digital Sky Survey is the deepest large scale survey of the
sky currently available. SkyView dynamically queries the SDSS archive
(currently release DR9) to retrieve information and resample it into the user
requested frame. Further information on the SDSS and many additional services
are available at the <a href="https://www.sdss.org">SDSS website</a>. Provenance: Sloan Digital Sky Survey Team. This is a service of NASA HEASARC.
The Sloan Digital Sky Survey is the deepest large scale survey of the
sky currently available. SkyView dynamically queries the SDSS archive
to retrieve information and resample it into the user
requested frame. Further information on the SDSS and many additional services
are available at the <a href="https://www.sdss.org/">SDSS website</a>. Provenance: Sloan Digital Sky Survey Team. This is a service of NASA HEASARC.
![the Fornax VST Survey is licensed under the `Creative Commons Attribution 4.0 License <http://creativecommons.org/licenses/by/4.0/>`_ .. image:: /static/img/ccby.png :alt: [CC-BY]](/registry-search/?f%5Brights_facet%5D%5B%5D=the+Fornax+VST+Survey+is+licensed+under+the+%60Creative+Commons+Attribution+4.0+License+%3Chttp%3A%2F%2Fcreativecommons.org%2Flicenses%2Fby%2F4.0%2F%3E%60_%0A%0A..+image%3A%3A+%2Fstatic%2Fimg%2Fccby.png%0A+++%3Aalt%3A+%5BCC-BY%5D%0A%0A&f%5Btype_facet%5D%5B%5D=Archive){kind=link}