If you have a DSLR it will most likely have a socket for a Intervalometer. What this does is takes a picture for you at set intervals and exposures.
So you can set it to every second or every 999 hours if you want.
Then you combine the pictures you get using editing software (I used Premiere Pro) and hey presto.
This one was just a little test to see if i could do it and I did a little post production on the colours and stuff...
Josh.
