90% of the Orbiter the Mars Reconnaissance Orbiter shot showed what is really there.
The researchers found that some of the 90% pixels of the shots taken by the Mars Mars Reconnaissance Orbiter satellite show what is really there. The error was calculated after finding the best signs of moisture-absorbing materials on the surface of Mars. They were not just a mirage: now scientists have serious doubts about the exact distribution of water on the planet.
The compact tool recognition reconnaissance imager for Mars, mounted on a satellite, is the "eye in the sky" that will identify minerals on the planet's surface and places of water accumulation. The procedure is carried out by measuring infrared waves and visible light, corresponding to different chemical structures, and then the data is distributed to pixels representing an area of 100 to 200 meters in diameter.
The pixels that show minerals like alunite, keseric, serpentine and perchlorate, most likely, manufactured filters, which respond to various peaks in the data, will inevitably occur when changing the sensors between areas of intense light and shadow. A team of researchers aimed at exploring the possible distribution of perchlorate salts, required a fine adjustment of the filtration process by using the new algorithm. In the end, they found that approximately 0.05% of the pixels soften the peaks to make them look like perchlorate.
Fortunately, in the case of most of the minerals problem, the image is slightly stained. After inspecting the same areas with other tools, the scientists saw that the minerals are mainly found in their places. But as for perchlorate, only a small part was real. It can become a serious problem.
The Martian atmosphere is too cold and thin so that the water on the surface existed in liquid form. But as a mixture with perchlorate salts its melting point can be low enough so that a small amount of liquid remains. Anyway, in theory.
Once you discover that the problem in CRISM will determine exactly where on Mars you have perchlorate. Since we are talking about damage only a few pixels, the existing maps are blurred, but they are not useless. In addition, the data received from the CRISM instrument can be adjusted using other tools.