I am going out tonight with my friends and my friend wants to try to make a star trail and i lied and said I knew how to to do it when I really don't. Help.|||Keep open the shutter and focus the camera towards pole star.keep it open for about 1hour with out movements towards north.(On a tripod)|||There is ONLY one wat to make photo star trails. You need to set the camera up on a tripod or some solid totally stable base (like a wall or your roof). You also need a camera that has an open shutter speed. Most cameras are set to 1/60th of a second which is fine for standard outdoor sunlight. You need one with a shutter speed that can hold the shutter open. It also helps to have a cable trigger or remote control trigger for the shutter. If you don't then you have to just keep your finger on the shutter holding it open and not shaking or moving the camera. This is hard.
Okay what you have to do is aim the camera at the star you want to see trail and click the shutter open and hold it open for at least 5 minutes. Also you also have to aim it away from any surface light (street lights, houses...) or those lights will wash out the picture.
You can estimate the length of the star trail arc by remembering that an all night trail is half a circle. So a one hour trail will be a little less than 1/20 of a circle. It takes a long time to get a good arc (like an hour). It's really kind of hard and takes practice (which you don't have the time to do).. So take a BUNCH of pictures, and try to take 10 - 20 minute exposure times.|||wow....ur in trouble, dont go out :D
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