Figure 2
From: Gigapixel optical microscopy for meteorite characterization
![Figure 2](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F2191-2521-2-3/MediaObjects/13535_2012_Article_4_Fig2_HTML.jpg)
Focus stacking. Single-focus optical micrographs at varying focus depths of an unpolished piece of the achondritic diogenite meteorite Tatahouine are shown at lower-left, upper-left, and upper-right. The focus-stacked image, which combines 40 individual images taken at steps of 5 μ m in focus, is shown at lower-right.