AWOL:
Wow!Can I ask how long it takes to make stacks like that?
Thank you! It all depends on the depth of the stack - a 300 image stack might take me anything upwards of 8 hrs or so, preparation (1hr), shooting (2 hr), stacking & substacking (4 hr), postprocessing (1 hr). Example below for those who don't have the first clue what this talk of stacking is all about, not an especially deep stack.
In fact my entire Arduino adventure is for this, my aim is to build a universal stage driven by motors inside a Peltier chamber. Hence the need for small but torquey motors 
Extreme Hoverfly by Johan J.Ingles-Le Nobel, on Flickr