What SLR is suitable for astrophotography?

Theoretically, any SLR can be used for astrophotography. Of course, it also needs the assistance of related equipment. However, if you really want to talk about professional SLR in astrophotography, there are still some. It's Canon EOS 20Da. Its related introduction: Canon launched the first digital camera EOS 20Da for starry sky photography, mainly EOS 20D. The function of detachable infrared filter is installed in front of CMOS sensor, which effectively improves the infrared sensing ability of EOS 20Da to 656 nm wavelength by more than 2.5 times, and further strengthens its long-term noise processing ability. Suitable for night sky shooting environment with less visible light and infrared photography.

The specifications of EOS 20Da and EOS 20D are almost the same, and they both use 8.2 million pixel CMOS photoreceptors, with a square opening of 6.4×6.4μm and an area of 22.5×15.0 mm. It provides ISO 100~ 1600 sensitivity. The sensitivity can be further upgraded to 3200, and the focal length of the lens is 65438+ 0.6 times that of the traditional 35mm camera. Using the image core DIGIC II, the power saving efficiency is high, and it is equipped with a denoising circuit. By fixing the image exposure for a long time, the noise can be completely removed.

In addition, EOS 20Da also introduced the image conversion mirror for the first time, which enabled the camera to transmit the lens image to the TFT LCD. Although this function is very common in general consumer digital cameras, it is a pioneering work in DSLR series, which allows photographers to watch real-time images through larger and brighter color displays without using too small optical observation windows. In addition, the LCD can be viewed at the magnification of 5 times and 10 times. But it is said that this model has been discontinued. If you want to buy, you may have to go to Taobao, hehe ~