I've always been fascinated with time lapse, have done a number of daytime ones with a static camera. I recently invested in a Dynamic Perception motorized 3 axis slider. My testing / learning around the yard is going well and I am planning on some Milky Way TLs for next season.
I also backed The VIEW intervalometer
on Kickstarter, an auto ramping device to make the sunrise / sunset transitions simple. It also offers a real time preview of how your time lapse looks, and integrates with the DP slider's control unit.
In searching POTN, there aren't many threads about TL, so I've been spending time going through a couple of TL dedicated forums, but they just aren't that active. Maybe we should start an "official" TL thread on POTN so members interested in this can share ideas / techniques, etc.