Traditional Culture Encyclopedia - Photography major - Is it cost-effective to change the astronomical machine or freeze the camera?

Is it cost-effective to change the astronomical machine or freeze the camera?

It is more cost-effective to change the astronomical machine than to freeze the camera. Astronomical cameras have high requirements for photosensitive chips, and long-term exposure requires that the noise of photosensitive chips should be low. However, when this camera takes pictures, the temperature of the photosensitive chip is particularly high. In order to cool the photosensitive chip, even liquid nitrogen freezing technology is needed.