The Amateur Astronomer's Library

The Vizier version can be accessed from here -
http://cdsarc.u-strasbg.fr/viz-bin/VizieR?-source=J/AJ/143/67

The supporting article can be accessed from here (free) -
http://iopscience.iop.org/1538-3881/143/3/67/

Key features of this article.
1) SDSS u band can be used from 12.0 to 22.0
2) SDSS g band can be used from 14.1 to 22.2
3) SDSS r band can be used from 14.1 to 22.2
4) SDSS i band can be used from 13.8 to 21.3
5) SDSS z band can be used from 12.3 to 20.5

6) When combining photometry with proper motion use r<20

7) Equations are provided linking the SDSS(r-z) colour to the absolute magnitude Mr, the mass and to the spectral class of a star.

8) The colour/colour diagrams show how the various types of star can be distinguished.

OVERALL SCORE - Five Stars