How to shoot the star orbit with iPhone

First of all, you need a mobile tripod and an iphone with star-orbit mode.

The shooting equipment that needs to be prepared in advance includes: mobile phone, tripod and mobile power supply. Note: the mobile power supply is to prevent the battery from running low when shooting. The tripod is used to fix the position of the mobile phone to prevent jitter when shooting.

In order to find the position of the North Pole star before shooting the orbit of the star, if you don't know, you can find it with the help of software. After choosing the right place, environment and time, fix the mobile phone with a tripod, aim the camera at the position of the North Pole star in the sky, and turn on the star orbit mode of the camera.

Adjust the camera parameters. It is estimated that one day, the mobile phone will not need to shoot stars, and it is still necessary to set the parameters manually. Switch to "Professional" or "Manual" mode and a series of options will appear below. Just modify them one by one. Star orbit is the trajectory of shooting stars in the air for a period of time, so the shutter time must be long. If it is normal, you can choose 30 seconds.

Press the shutter and you can start shooting.

Extended data

The orbit of a star is the orbit of continuous motion produced by a star in a long exposure photo. In other words, the camera does not track the movement of stars in the night sky. On the contrary, the camera position remains the same, and the stars themselves move as time goes by. The resulting picture shows the trajectory of the stars under the night sky.

The orbit of a star is actually a reflection of the rotation of our earth itself. The earth makes a complete rotation relative to the background star, and the rotation time is about 23 hours and 56 minutes.

This means that if you look up at the stars in the sky, you will find them moving in the night sky. Stars near the poles will produce the smallest circle, while stars near the equator will produce the largest circle. Stars, like the sun in the daytime, move from the east to the west in the night sky every night. Each star moves westward about 15 degrees per hour.

The orbit is actually an arc or a partial circle. As time goes on, they move forward in an endless cycle.

Baidu encyclopedia-stellar orbit