B.2.6 Sdss

Specialist display functions for use with the Sloan 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.

• Parameters:
  • label (String): label for display window
  • ra (floating point): Right Ascension in degrees
  • dec (floating point): Declination in degrees
  • pixels (integer): size of displayed image in SDSS pixels
• Return value
  • (String): short log message

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.

• Parameters:
  • ra (floating point): Right Ascension in degrees
  • dec (floating point): Declination in degrees
  • pixels (integer): size of displayed image in SDSS pixels
  • scale (floating point): pixel size in arcseconds
• Return value
  • (String): short log message

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.

• Parameters:
  • ra (floating point): Right Ascension in degrees
  • dec (floating point): Declination in degrees
• Return value
  • (String): short log message

SDSS_DR2_BASE_URL

Base URL for SkyServer JPEG retrieval service, DR2.

SDSS_BASE_URL

Base URL for SkyServer JPEG retrieval service.