Table · dataset · 1999
Cape Photographic Catalogue 2
Listed in IVOA Registry (Virtual Observatory)
This catalog contains the provisional positions for 51018 stars in the Cape zone -40 deg. to -52 deg., on the FK4 system for the equinox 1950.0.
Description
The internal mean error of a single coordinate obtained from the mean of r=four plates is estimated to be less than +/- 0.1" at the mean epoch of observation, about 1962. The systematic deviation from the FK4 system in a small area is probably also about +/-0.1".
New proper motions have been determined for 22731 stars which are also in the Smithsonian Astrophysical Observatory (SAO) catalogue; the formal mean error of an annual proper motion in each coordinate is about +/-0.004"/a. Introduction: The usable width of each plate is 4.1 deg. Stars were selected from the SRS and SAO catalogs, with the SRS providing the reference frame.
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All SAO stars were included except in crowded fields near the galactic plane, in which many SAO stars were omitted. Stars were then added by visual inspection to bring the number up to about 250, with as uniform a distribution as possible over the plate. The number of stars measured per plate varied from 70 to more than 700.
The numbering system adopted is based on the South Polar Distance of a band of declination 1 deg. wide with the stars within each band being numbered sequentially in the order of right ascension. Approximate visual magnitudes have been determined from the image diameters calibrated by the V values from the published literature. Only three plates have fewer than 10 such standards; 75% of the plates have between 15 and 30.
Generally, the available stars are brighter than V-9.5 mag.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/I/85 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 1984MNRAS.208..911N ui.adsabs.harvard.edu/abs/1984MNRAS.208..911N ↗
publication · from IVOA Registry
Catalogue records · 2
- VOResource record dc.g-vo.org/oai.xml?verb=GetRecord&metadataPrefix=ivo_vor&identifier=ivo%3… ↗
metadata API · from IVOA Registry
- Registry record (GAVO) dc.g-vo.org/I/cds.vizier/i/85 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Optical
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Image 75%
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/i/85 | 15 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].local:field:astronomy | mapping · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:optical | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].local:modality:image | enrichment · IVOA Registry | keyword-concept-rules@1.0.0 | title+description (75%) |
| description | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_description |
| license_text | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| publication_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| title | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_title |
| updated_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 |