Tianwen image photography

First,? Tian Wen No.1? Experienced what:

Since July 23rd, 2020? Tian Wen No.1? Since the successful launch, it has flown for more than 200 days, completed 1 deep space maneuver and 4 mid-course corrections, and completed 3 near-fire braking. When we arrived at Mars, the flight mileage was about 475 million kilometers, about 223 million kilometers away from the Earth. One-way communication between machine and ground is delayed by about 10.7 minutes, and all systems are in good condition. Follow up? Tian Wen No.1? After several orbital adjustments, it will enter the parking orbit of Mars and carry out the exploration of the pre-selected landing zone. It is planned to land on Mars in May-June, 20021,and carry out patrol exploration. Now? Tian Wen No.1? It only takes seven minutes to land on Mars.

2021February 5 at 20: 00, Tian Wen-1? The ignition work of the probe engine successfully completed the fourth mid-course correction of the ground fire transfer section to ensure that the Mars capture was carried out as planned. Nasa announced simultaneously? Tian Wen No.1? The first image of Mars was obtained about 2.2 million kilometers away from Mars.

2021February 10/9: 52, China's first Mars exploration mission? Tian Wen No.1? The detector implements near fire capture braking, and the orbiter ignites at 3000N for about 15 minutes. The probe successfully entered the near fire point, with an altitude of about 400 kilometers, a period of about 10 earth days and an inclination of about 10? The Great Ellipse Ring Fire Orbit became China's first artificial Mars satellite, realizing? Round and round? Step one? Around? A successful goal around mars. After the first Mars exploration mission entered the Mars capture stage from the ground fire transfer stage, Tian Wen No.1? The medium-resolution camera, high-resolution camera, magnetometer, mineral spectrum analyzer, ion and neutral particle and energy particle detectors carried by the circulator will begin to work one after another to carry out multi-dimensional exploration of Mars.

2021Feb 15, the first Mars exploration mission? Tian Wen No.1? The detector successfully implemented the plane maneuver to capture the far fire point of the orbit. The 3000 Niu engine on the probe ignited, and the orbit was adjusted to the ring fire orbit passing through the two poles of Mars, and the height near the fire point was adjusted to about 265 kilometers. ?

20216: 29 on February 24th. Tian Wen No.1? The third near fire braking of the Mars probe was successfully completed, and it entered the parking orbit of Mars with a near fire point of 280 km and a far fire point of 59,000 km, with a cycle of 2 Mars days. ? Tian Wen No.1? Will stay in orbit for 3 months. Tian Wen No.1? All seven payloads carried on the orbiter will be turned on to conduct scientific exploration of Mars and prepare for its landing.

Second,? Tian Wen No.1? Next, you need to complete the following tasks:

1, March,? Tian Wen No.1? After transferring to parking orbit, it will run on the parking orbit for about 80 days, pre-detecting the landing area, and performing some imaging detection on the pre-selected landing area, so as to make preliminary preparations for the final landing success.

2. It is expected to be May this year. Tian Wen No.1? After several orbital adjustments, it will land on the surface of Mars. Before that? Tian Wen No.1? The lander is separated from the orbiter in a predetermined area. Then open the parachute of the lander, and the lander depends on the cooperation of the control system and the propulsion system to choose a safe place to land. After landing, the rover, the patrol, was unlocked and separated from the lander. The rover left the lander and began to patrol.

Thirdly, the high-definition images of Mars sent back by Tian Wen 1 tell us how the surface of Mars is affected:

NASA released three high-definition images of Mars taken by Tian Wen 1, including two black-and-white images and 1 color images. The imaging areas of these three pictures tell us that the polar cap of the North Pole of Mars presents a spiral structure on the road. Because years of deposition and ablation have produced spirals. Sandstorms on Mars generally originate from the North Pole and the South Pole. ?

Within the imaging range of the image, we can clearly see that there are small potholes, ridges and dunes on the surface of Mars. According to calculation, the largest impact crater is 620 meters in diameter.

Fourth, knowledge expansion:

Whether it is a black-and-white image or a color image depends on the shooting mode. The images taken by the high-resolution camera are shot by the detector running on the large elliptical orbit and adopting the linear array push-and-sweep mode, and are divided into three modes: panchromatic, color and user-defined mode, among which panchromatic (black and white mode) images are the clearest, with the largest data volume and the highest scientific value. The definition of color images is 0.25 times that of black and white images. After the black-and-white and color images are fused, a clear and beautiful color image will be produced. There is only one static shooting mode for a medium resolution camera, but there is no dynamic shooting mode, that is, the still shooting mode, so that the camera is always facing a certain area? Gaze? The overall resolution will be lower than that of a black and white camera.