This is the result of many minutes of waiting.
I went out to the back of the Great Orme, on Marine Drive. Round there, there is no light pollution – Llandudno has it, but facing out to sea, there is nothing!
That is what you need for a good Star Trails shot. No light pollution.
And a Tripod.
I waited for 50 minutes as 93 photographs took themselves, in succession. 30″ each. Then stacked them on a programme called Startrails (windows only, i think.)
And you get this.
I used a Canon EOS 30D with a Battery Grip to boost the battery life. A Sigma 10-20mm lens at 10mm and focus just before infinity was on the front, and a remote cord to keep it firing was used so I can sit back and watch Top Gear on my iPhone.
Well worth trying, just to see what you can get. They are fantastic, and i’ve seen some amazing ones around Flickr and the Web.