Can Canon 80D shoot the starry sky? How to shoot?

Of course. The shooting method is as follows: Mode: M blocks

Aperture: For some lenses with large aperture (such as 1.4), if the aperture is set higher than 2.8, the image may be blurred and shaken.

Shutter: Long exposure is not always 30 seconds. There is a popular "500 principle"-that is, divide the focal length by 500 to calculate the longest exposure time that will not cause obvious line dragging. But this method is not perfect, because we have to consider the size of the sensor (for example, whether it is full width).

ISO: depending on the environment and camera performance. Generally between 800 and 6400. The higher the sensitivity is set, the shorter the time required for correct exposure. Which ISO value to use depends on the test. Shooting can generally start from 1600, and choose the most appropriate value by comparison.

White balance: generally between 2900-4400K K, but it also depends largely on the environment.

Noise reduction: The built-in noise reduction function will lose details, so it is recommended to turn it off. Noise reduction can be done at a later stage. If you must use it, you must be careful. But when shooting the orbit of a star, it must be closed. If the camera has high sensitivity noise reduction function, it can be used as appropriate.

Other operations:

(1) long exposure, in order to prevent jitter, on the one hand, tripod and time-delay shooting are used, on the other hand, the mirror preview function of the camera is turned on.

(2) For long exposure, the eyepiece hood should be used to remove stray light.