What camera do you need for astrophotography?

The first thing you need for astrophotography is a telephoto lens, one above 500mm, which can be used to take pictures of the moon and the like. It is best to use an astronomical telescope, a 1200mm telescope can be used to take pictures of nebulae and the like. The camera needs to have an interface with the astronomical lens, just use the interface. There are several camera requirements. 1. There must be a B door or a T door to achieve long exposure. 2. It must be low-noise. Generally, low-temperature cooling modification is required to solve the problem of CCD heating and noise caused by long-term exposure. 3. When taking pictures of some nebulae, you need to remove the infrared filter in front of the CCD to ensure that you can obtain a full spectrum of nebula images. 4. Automatic orbiter, which can track the movement of the planet. Astronomical photography also costs money. Haha, it requires funds, and it is not easy to go to places far away from the light pollution of cities and on mountaintops to produce good films. General digital SLRs can be modified to achieve shooting. Machines that cost less than 2,000 yuan can only take pictures at the moon level, and can't do anything further away. Anything with a telephoto lens over 400 is fine. It would be better to add a 2x lens or something, but it can only be at the level of playthings.