I’ve hacked together an app for taking high resolution multi-hour timelapses using a 16 GB iPhone. The phone takes a full-resolution photo every five seconds and immediately uploads it over wifi to a computer that has more storage. I then crop, resize, and combine images into a movie.
For the first long test (over 20 hours) I left the phone on a windowsill and pointed it roughly in the direction of the sky (I couldn’t frame the shot well during the night). I was lucky enough to capture a moonrise, direct sunlight, neighbours on the roof, a few planes, various types of clouds… I’m amazed how well it came out.
All camera settings are automatic and apart from cropping and resizing I didn’t do any post-processing.