How do they do this?

http://www.youtube.com/watch?v=aVrK4fxbsiY&feature=channel

I love star trail pics.

It looks like he took a bunch of pics shutter speed fairly low and combined them together. Rather than taking 10 or so long (30 min) shots. What do you think?

 

That is frigging cool

 

I think your right and thats the coolest thing I've seen all day.

 

Well there is a program the you can overlay images together but i forget what it is. I tried to do something like that with a long shutter on my tripod but the streaks were little but it still looked cool. My shutter was open for 42min. If you really want to do it right use a film camera and open the shutter for like 5 or 6 hours you will defiantly get the earths rotation. I thought about doing to with my DSLR but I don't want to damage my censer leaving the shutter open that long.

 

Here is a picture I took another night. Its the same concept as the video, I just left my shutter open for ten seconds. See if any one can locate a Tacoma in the picture???. lol

 

But instead of the cars moving its the stars

 

There's a bunch of different ways to make star trails.

Of course, you can point the camera at the polar star and things will rotate around that as long as your exposure is long enough (15-20 minutes). You can also "stack" a number of shorter exposures to come up with one exposure and you to achieve the effect you see at the top of this thread, you can use an intervalometer to make a number of exposures over a long period of time and them assemble them into a timelapse movie--these can take 4+ hours of wall clock time to make a couple of minutes of video--but it looks really good.

I kinda like some of the timelapse stuff I've seen lately.

It's not as obvious but this was taken under a full moon.



and this is a star trail...



Lots of fun and glad to see people are wanting to try star trails!

Here is a little primer on shooting them.