1. A system for estimating moisture content in a steam flow through a steam turbine, the system comprising: at least one laser assembly configured to illuminate at least a portion of the steam flow; at least one image sensor configured to obtain a plurality of digital images of the illuminated portion of the steam flow; and a computing device operatively coupled to the at least one image sensor, the computing device configured to: analyze the plurality of digital images to measure an amount of light scattered in each digital image; and compare the analysis of the plurality of digital images to estimate moisture content of the steam flow.