Dahei deep space photography

Tian Wen-1' s self-portrait in deep space is the first spacecraft self-portrait in China's space history. Tian Wen's self-portrait is mainly taken by throwing a miniature camera, and then the miniature camera sends the photo data back to the detector.

The whole shooting process of Tian Wen-1 looks very relaxed, but in fact, the research team has done a lot of technical research and adequate preparation behind it.

In terms of shooting, the R&D team once thought that Tian Wen No.1 would take a selfie with a selfie stick like people on the ground. However, due to the large size of Tianwen No.1, a selfie stick of 15m is needed to complete the selfie. In a space full of uncertainty and insecurity, it is undoubtedly full of security risks to extend a pole of 15m. Secondly, sticking out such a long pole will consume a lot of energy. Therefore, the research team created a brand-new scheme for Tianwen-1: separated monitoring scheme. Simply put, it is to let Tian Wen-1 throw a camera under suitable lighting conditions, and let the camera send the data back to the detector after shooting.

As for the camera, because the camera is not fixed after being thrown out, the research team specially designed a miniature camera with cameras in front and back, so that the camera can be turned over to take more photos. In addition, the camera is equipped with super WiFi communication of wireless communication, which allows the camera to transmit data to the detector safely and quickly. In terms of battery life, the camera is equipped with a battery with a battery life of up to one hour, which effectively ensures the long-term work of the camera and the stable and safe transmission of data; Pixelally, this camera uses two different resolutions and color images, which makes the transmitted photos clearer, rather than monotonous black and white.

Tian Wen-1' s self-portrait in deep space can make the scientific research team intuitively monitor the working state of the Mars probe in orbit and ensure the normal operation of the probe.