I prototype and do some research regarding optical satellite orientation devices (sun trackers, earth trackers). There's much more text at my linkedin profile:

http://ru.linkedin.com/pub/dmitry-galchinsky/5a/ab7/850/

and here's my odesk profile: https://www.odesk.com/users/~01c2afb6c77848f8ff

My github profile is quite abandoned but let the link be here: https://github.com/galchinsky