Note: The current version includes only the North (POSS-I plates)
Note: The construction of the
is still in progress: this
version has no proper motions, and the magnitude limits are 18.5 in F (red)
and 19.5 in J (blue). The data are copyrighted, check
the data use Policy.
The Naval Observatory Merged Astrometric Dataset (NOMAD) contains
astrometric and photometric data for over 1 billion stars derived from
the Hipparcos (I/239), Tycho-2 (I/259), UCAC2 (I/289), and USNO-B1.0
(I/284) catalogs for astrometry and optical photometry, supplemented
by 2MASS (II/246) near-infrared photometry.
An efficient remote query program findnomad1 is
available in the cdsclient
package, for Unix/Linux platforms
Note: This version of the
has no proper motions, but the limits on brightness which existed on
GSC2.2 (F<18.5, Bj<19.5) were removed.
Note: see the UCAC4 document, and the
the fix for high proper motion stars.
The UCAC home page is available at
Please acknowledge the usage
of the UCAC4
Note: Zone -40/+50deg
Note: UCAC5 document
(original column names in green) (1692919135 rows)
Note: SDSS is also available from http://www.sdss3.org/dr9/
Note: Errors found in the Final IUE Merged log are reported in the file errata.htx
Note: (see also the postcard server)
Note: The column FIRST provides a link to the FIRST cutout image server (see also the original FIRST search engine)
Note: The ``short'' version of the catalogue can be retrieved by a selecting *+* in the SEQflags column
Note: on-line documentation at http://www.swift.ac.uk/1SXPS/docs.php