Photographer/videomaker Mathew Vandeputte has come up with a very interesting technique to create a vortex star trail as described in this video. The technique requires Lightroom, Photoshop, After Effects and Starstax – but if you are a full Creative Cloud subscriber, you will have access to all of these except for Starstax. Starstax can be downloaded for free here – http://www.markus-enzweiler.de/software/software.html
For more information on Mathew’s technique, check his website page at http://tjoez.zenfolio.com/blog/2014/7/how-to-create-vortex-startrails