Information on resource 'The USNO-B 1.0 Catalog'
The USNO-B catalog is an all-sky catalog of about 1e9 objects
including their proper motions, based on scans of several sky surveys
conducted between 1950 and the late 1990ies.
Services defined within this resource descriptor
- Corrections to USNO-B plates from PPMX
This table contains, for each field that went into USNO-B1, a
correction derived from matching the USNO-B1 positions for that plate
with the PPMX ones (used as a representation of ICRS) and deriving a
mean offset of the objects from that particular plate for them. We did
not attempt to derive magnitude-dependent corrections (although it is
known that the true residuals depend on both magnitude and color).
- USNO-B query
Tables defined within this resource descriptor
- usnob.data – queryable through TAP and ADQL
The USNO-B 1.0 catalogue with Barron's spurious detections removed.
- usnob.platecorrs – queryable through TAP and ADQL
Plate corrections to USNO-B 1.0 based on a crossmatch with PPMX
- usnob.ppmxcross – queryable through TAP and ADQL
A crossmatch between USNO-B 1.0 and PPMX.
- usnob.spurious – queryable through TAP and ADQL
Spurious detections in USNO-B 1.0 as established by Barron et al,
2008AJ....135..414B.
- usnob.twomasscross – queryable through TAP and ADQL
A crossmatch between USNO-B 1.0 and 2MASS.
Copyright, License, Acknowledgements
This service uses code provided by Astrometry.net. For more details
visit http://astrometry.net. The field metadata were, in part, taken
from CDS' Vizier service.
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