Index: /trunk/doc/pslib/psLibADD.tex
===================================================================
--- /trunk/doc/pslib/psLibADD.tex	(revision 5915)
+++ /trunk/doc/pslib/psLibADD.tex	(revision 5916)
@@ -1,3 +1,3 @@
-%%% $Id: psLibADD.tex,v 1.90 2006-01-06 02:09:17 price Exp $
+%%% $Id: psLibADD.tex,v 1.91 2006-01-06 03:49:24 price Exp $
 \documentclass[panstarrs]{panstarrs}
 
@@ -1975,5 +1975,5 @@
 slightly from equation 4.8b of Rybicki and Lightman:
 \begin{equation}
-\mu' = \mu + \beta \frac{\mu^2 - 1}{1 - \beta\mu}
+\mu' = \mu + \beta \frac{1 - \mu^2}{1 - \beta\mu}
 \end{equation}
 where $\mu' = \hat{r}' \cdot \hat{\beta}$.