Quasar Wedge Plot
Each dot represents the location of one quasar, with spectroscopically
measured redshift, from the SDSS Early Data Release. All of the objects
are near the celestial equator (declination = 0). The position around
the circle is determined by the object's right ascension, and the
distance from the center increases with the object's redshift. The
quasar population extends to a redshift of 5.
This image is also available as a PostScript file (122 KB).