WCSTools

ssdss
Sloan Digital Sky Survey Catalog Search Program

WCSTools programs
ssdss finds objects in the Sloan Digital SKy Survey Photometric Catalog within a specified region of the sky and lists their sky positions or lists specific entries in that catalog. It is a symbolic link to scat, and is equivalent to running scat -c sdss ....

By default, only the brightest 100 objects (or closest 100, if the -s p option is used) are returned. Use the -n option to increase this number.

Output is to standard out, unless the -w flag is set, in which case it goes to objectname.sdss or search.sdss.

The SDSS number is the number returned from the SDSS web search. The official SDSS designation for an object is SDSS JHHMMSS.ss+DDMMSS.s, where the coordinates are truncated, not rounded. This format must be used at least once for every object listed in a paper using SDSS data.

When abbreviating the object name in the text please use the "J" to indicate the equinox of the coordinates. For example SDSS J123456.89-012345.6 could be abbreviated as SDSSJ1234 or SDSSJ1234-0123. Please refer to the CDS dictionary on SDSS for further information.

If you want to find the SDSS stars in the area covered by an image with a world coordinate system in its header, try imsdss,

Command Line Arguments

CGI Queries and Parameters

ssdss can be used remotely as a CGI executable.

Examples

Search with results to standard output
Search with results to a file
Find closest star

Last updated 6 January 2004 by Doug Mink dmink@cfa.harvard.edu

Telescope Data Center