Kenneth Brandon - Dark Sky Chaser | Time-Lapse of The Night Sky - Orion @KennethBrandon | Uploaded November 2011 | Updated October 2024, 2 hours ago.
I use my Canon XTi (400) with the CDHK 400 Plus firmware Hack to take photos every 30 seconds.

At first I track Orion and you can see the earth rotate under.

Then I show the same clip in a standard way.

Here's the gear I use:
bit.ly/Time-Lapse-Gear