This service implements the Identifiers 2.0
suggestion for how to resolve an IVOA publisher dataset identifier;
that is, it tries to resolve the registry part to Datalink,
SSAP, or Obscore capabilities and tries those to find access URLs.
If that fails, it repeats this procedure for services that the
base resource declares as served-by.
The code used here is available at
http://svn.ari.uni-heidelberg.de/svn/gavo/hdinputs/ivoidval.
See also Examples_
.. _Examples: http://dc.g-vo.org/ivoidval/q/didresolve/examples
The global TAP schema collects information on
tables and columns from known TAP servers. This facilitates locating
queriable data by physics (via UCD) or keywords (via description).
Note that this shouldn't really be necessary as all information
present here should be exposed through Registry records. However,
in reality data providers currently are much more liable to give
column metadata in their tap_schema than in their Registry records.
Hence, for the time being, we maintain this service by harvesting
tap_schemas about monthly.
The global TAP schema collects information on
tables and columns from known TAP servers. This facilitates locating
queriable data by physics (via UCD) or keywords (via description).
Note that this shouldn't really be necessary as all information
present here should be exposed through Registry records. However,
in reality data providers currently are much more liable to give
column metadata in their tap_schema than in their Registry records.
Hence, for the time being, we maintain this service by harvesting
tap_schemas about monthly.
Gravitational arc candidates in the CFHTLS-Archive-Research Survey
CARS
Short Name:
carsarcs scs
Date:
23 Mar 2022 13:13:06
Publisher:
The GAVO DC team
Description:
Candidate gravitational arcs in the 37 deg^2 of
CFHTLS-Archive-Research Survey (CARS). The data include their
post-stamp images, astrometry, photometry (u*,g',r',i'), geometric
properties (length, length-to-width ratio, profile curvature, area),
and photometric redshifts. The arc candidates were selected booth with
an automatic arcfinder, based on a tailored image segmentation and a
color selection, and by visually inspecting the survey.
Operators of publishing registries
can use this service to request a re-harvest of their registry by pasting
in their registry's IVOID below. If you paste in the magic value
``ivo://ivoa.net/rofr``, we will also fetch new registries from the
RofR.
You usually want to use this when you want to see the effect of some
change in your registry on, say, TOPCAT. Note that you cannot start
a full re-harvest of a registry from this interface. Contact the
operators if you think you need that.
Scans of plates kept at Landessternwarte Heidelberg-Königstuhl. They
were obtained at location, at the German-Spanish Astronomical Center
(Calar Alto Observatory), Spain, and at La Silla, Chile. The plates
cover a time span between 1880 and 1999.
Specifically, HDAP is essentially complete for the plates taken with
the Bruce telescope, the Walz reflector, and Wolf's Doppelastrograph
at both the original location in Heidelberg and its later home on
Königstuhl.
High-Resolution Very Large Array Imaging of Sloan Digital Sky Survey
Stripe 82 at 1.4 GHz
Short Name:
vlastripe82 cone
Date:
23 Mar 2022 13:13:06
Publisher:
The GAVO DC team
Description:
This is a high-resolution radio survey of the Sloan Digital Sky Survey
(SDSS) Southern Equatorial Stripe, a.k.a. Stripe 82. This 1.4 GHz survey
was conducted with the Very Large Array (VLA) primarily in the
A-configuration, with supplemental B-configuration data to increase
sensitivity to extended structure. The survey has an angular resolution
of 1.''8 and achieves a median rms noise of 52 μJy per beam over 92 deg^2.
The catalog contains 17,969 isolated radio components, for an overall
source density of ∼195 sources/deg^2. See also J.A. Hodge et al,
:bibcode:`2011AJ....142....3H` .
The main result catalog from the ESA Hipparcos satellite, obtained
November 1989 through March 1993. In the GAVO DC, several columns were
left out and all angles are given in degrees.
GAVO's historical photographic plate archive (GHHPA) is a
collection of various digitized historical photographic
plates. It currently exposes:
* the scans of plates of selected Kapteyn special fields obtained
at Potsdam
* the Palomar-Leiden Trojan surveys, 1960-1977,
* a collection of plates obtained at Boyden Station, South Africa,
kept at various German observatories.
Other plate collections kept by GAVO include the Heidelberg
Digitized Astronomical Plates HDAP,
ivo://org.gavo.dc/lswscans/res/positions/siap, and the APPLAUSE
database from Potsdam.