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### B.2.4 Sdss

Specialist display functions for use with the Sloane Digital Sky Server.

sdssShowCutout( label, ra, dec, pixels )
  Displays a colour cutout image of a specified size from the SDSS around a given sky position. The displayed image is square, a given number of (0.4arcsec) pixels on each side.
sdssShowCutout( ra, dec, pixels, scale )
  Displays a colour cutout image of a specified size from the SDSS around a given sky position with pixels of a given size. Pixels are square, and their size on the sky is specified by the `scale` argument. The displayed image has `pixels` pixels along each side.
sdssShowCutout( ra, dec )
  Displays a colour cutout image of a default size from the SDSS around a given sky position. The displayed image is 128 pixels square - a pixel is 0.4arcsec.
SDSS_DR2_BASE_URL
  Base URL for SkyServer JPEG retrieval service, DR2.
SDSS_BASE_URL
  Base URL for SkyServer JPEG retrieval service.

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TOPCAT - Tool for OPerations on Catalogues And Tables
Starlink User Note253
TOPCAT web page: http://www.starlink.ac.uk/topcat/
Author email: m.b.taylor@bristol.ac.uk
Mailing list: topcat-user@bristol.ac.uk