How to shoot the star model Sony a55 with SLR? The more detailed, the better. Beginner orz

The most common method is to adjust the aperture to the maximum, and the iso is also raised, about 65,438+0,600. Then, put it on the shelf, and the exposure time is shorter, not exceeding 10 second. This method won't derail, but in places with heavy light pollution, nothing can be photographed. If the sky is too bright, you can hardly watch movies. Many people shoot stars in the city and take movies home to watch ... what? You have a UFO? In fact, it's just the glare of street lamps)

There is another way to photograph the orbit of a star. In the movie era, it is basically a good frame. Release the cable and lock the shutter, then sleep until four or five o'clock. Now, you can stack multiple worksheets. The specific operation steps are a little troublesome and take a long time. Not everyone can insist on it at night. First, you have to prepare a shelf and batteries. Generally speaking, at least one spare battery is needed, and the card is relatively large. This shooting method should be in RAW format, with hundreds of shots per turn. Then prepare warm clothes, it will be very cold in the wild at night. Then find the location of the north pole star. All the stars revolve around that position. Composition depends on your own preferences. After positioning, each photo should be exposed for 30 seconds to ensure that the stars can be seen and the background should not be too explosive. It is better for the camera to have interval shooting function (I wonder if a55 has this function). If not, continue to press the cable to release it. Sometimes it's too dark to shoot the background at night, so you can make up a composite background at dawn. Because of the long shooting time, there may be a power outage in the middle. It's better to have a handle. Changing the battery may cause the tripod to shift, which requires practice to master.