help with star trails

[hennebury22]

First off, I have an olmpus evolte 420.
Ok, I was wondering how you can make those "star trail" photos. How do you choose a 20 minute(or whatever minute) delay?
Setup?

[Celestron]

I'm not familiar with your camera . Do you have a link to details on it ? It would help us better understand your camera . I will say this . If your camera has "Manual" Settings you can set it to manual and choose your settings and shoot from a tripod . Find out what the longest length of time is that your camera can take a single exposer . Most here take a lot of lenghty exposers and stack their images to make a single image . Others should step in later and help with info on how to do this .

[Adrena1in]

The E-420 appears to be like most other DSLRs...put it onto the "M" setting and it ought to let you choose the exposure length, and set it to "BULB". When you press the shutter it'll open, and when you release the shutter it'll close. Ought to be as simple as that really.

What you'll need is a tripod to put the camera on, and also a remote shutter cable.