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Index – Tech-Science – An image of the moon with a resolution of 1.4 billion pixels was taken

An image of the Tycho crater on the Moon using experimental radar technology. Thanks to successful experiment, they can expand the system, which, if activated, could change the way we see the universe.

The Green Bank Observatory (GBO) and Telescope (GBT), a defense and space conglomerate from Raytheon Intelligence and Space (RI&S) and the US National Radio Astronomy Observatory (NRAO) worked together to produce a 1.4 billion pixel image, which was posted on the NRAO website. The image is approximately five meters wide and five meters high, and covers an area of ​​200 by 175 kilometers on the Moon’s surface, with the 86-kilometre-diameter Tycho Crater to its right.

Tycho Crater is located on the side of the Moon facing the Earth, in the southern elevations of the orb. The crater of the volcano and its radioactive system, extending for thousands of kilometers, can be observed on the disk of the full moon even with the naked eye, we have to look with our eyes for a bright surface. But you’re unlikely to see the crater as shown by the Green Bank Telescope (GBT) image. It is interesting that Taiko Crater was one Apollo 15 of the planned landing sites, but in the end the expedition chose one of the Hadley Valleys of the Apennines. The GBT image also shows the valley between the Hadley Mountains and the Hadley Delta, where Dave Scott and Jim Irwin landed in 1971.

The Index has written about the observatory many times before, and it is home to the world’s largest fully controllable radio telescope, located in Green Bank, in the middle of the US National Radio Silence Zone. The use of devices that emit electrical signals is strictly prohibited in an area of ​​33,670 square kilometres, and is strictly prohibited in and around the Green Bank area, as the radio signals they emit can destroy researchers’ work by interfering with the reception of radio waves captured by GBT from several light. – Years. You can read more about the Green Bank life of the approximately 140 people who live there in this article.

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To produce a high-resolution image, GBT is equipped in 2020 with a new radio wave transmitter jointly developed by Raytheon and the Green Bank Observatory. This allows the telescope not only to receive incoming signals from space, but also to transmit them. Last November, a tax was introduced and VLBA . System, and a much lower-resolution version of the image of the moon’s surface just published in 2021 in february Already subscribed.

from radio signals a SARThat is, you will have an image using synthetic aperture radar technology. GBT transmits radio signals that reach the lunar surface, are reflected from there, the reflected signals are picked up by members of the VLBA and GBT system, and the data is then stored on Earth. The stored data is compared and analyzed, and a high-resolution visual image is formed from its collection. The fact that the transmitter, target, and receivers are all in constant motion as the Earth and Moon travel through space only helps with SAR imaging, as it causes differences in the different radar signals. These differences can be analyzed to produce an image with much higher resolution than can be captured from a fixed point.

Galen Watts, GBO مهندس Engineer She said, such radar data has not been manufactured from such a distance and with this resolution. Data processing and image production require huge computing power and many man-hours. NRAO’s Watts wrote: “If we tried something similar ten years ago, computers might have worked for a year before producing a single image of the data we received.” in her contacts, where the image can be displayed in a higher resolution.

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(Cover Image: NRAO/GBO/Raytheon/NSF/AUI)