The world’s first 3.2 billion pixel photo is released, and 378 Ultra HD screens are required for full display

Recently, staff at the National Accelerator Laboratory of the U.S. Department of energy took the first set of 3.2 billion pixel digital photos using a series of extraordinary imaging sensors. These imaging sensors will be the heart and soul of the future camera at Vera Rubin Observatory in Chile. < / P > < p > the size of this set of photos is also amazing. To display one of the full-size photos requires 378 4K UHD TV screens. They have a resolution of 3.2 billion pixels, and even allow you to see a golf ball from about 15 miles away. Soon, these properties will drive astrophysical research unprecedented. < / P > < p > the SLAC staff took the first 3.2 billion pixel picture with the full focal plane of the LSST camera. < / P > < p > next, these sensor arrays will be integrated into the world’s largest digital camera currently under construction at SLAC. After the installation of Willa Rubin Observatory, the camera will take a full panoramic view of the sky every few nights for the next 10 years. Its data will be entered into the Willa Rubin Observatory’s spatiotemporal heritage survey, a catalogue of more galaxies and countless celestial movements. Using the LSST camera, the observatory will take the largest astronomical record ever and reveal some of the biggest mysteries in the universe, including dark matter and dark energy. < / P > < p > “the LSST camera is the sensitive eye of Rubin observatory.” Vincent riott, LSST camera project manager, said so. The successful completion and testing of focal plane of LSST camera is one of the most important achievements in the whole project of Rubin Observatory, which will enable the observatory to explore the next generation of astronomical science. < / P > < p > figure in the future, the full focal plane width of LSST cameras will be more than 2 feet, including 189 independent sensors, which will produce 3.2 billion pixel images. < / P > < p > in a way, the focal plane is similar to an imaging sensor of a digital camera or a mobile phone camera: it captures light emitted or reflected by an object and converts it into an electrical signal for generating a digital image. But the focal plane of LSST camera is much more complicated. In fact, it contains 189 separate sensors, each with a resolution of up to 16 million pixels. < / P > < p > at the Brookhaven National Laboratory of the U.S. Department of energy, nine sets of CCDs and their associated electronic components were assembled into square units called “science rafts” and then transported to SLAC. There, the project team inserted 21 of these “science rafts,” along with four special “science rafts” not used for imaging, into a fixed grid. The focal plane has some very special characteristics. It’s not only 3.2 billion pixels, but it’s also very small – about 10 microns wide – and the focal plane itself is very flat and doesn’t fluctuate more than a tenth of a human hair. This ensures that the camera can produce a very high resolution image. < / P > < p > this focal plane is more than 2 feet wide, making it very large compared to the 1.4 inch wide imaging sensor of a full frame consumer camera. What’s more, the entire telescope is designed to allow imaging sensors to detect objects 100 million times darker than objects visible to the naked eye, with the sensitivity to see candles thousands of miles away. Steven Ritz, a scientist with the LSST camera project at the University of California, Santa Cruz, said: “it’s just shocking. These unique features will enable the Rubin Observatory’s ambitious scientific program. ” < / P > < p > in 10 years, the camera will collect images of about 20 billion galaxies. The data will enhance our understanding of how galaxies evolve over time, and will allow us to test dark matter and dark energy models more deeply and accurately than ever before, Ritz said. The observatory will be the perfect facility for a wide range of scientific research, from detailed studies of our solar system to the study of distant objects leading to the edge of the visible universe. < / P > < p > image to capture the first 320 megapixel image, the SLAC team used a 150 micron pinhole to project the image onto the focal plane. Left: schematic diagram of pinhole projector. Right: after projecting the image onto the focal plane, SLAC staff take out the pinhole projector from the cryogenic assembly. < / P > < p > earlier this year, after six months of intense work, the FPA was finally assembled. SLAC staff inserted 25 rafts into narrow slots in the grid. In order to maximize the imaging area, the distance between sensors on adjacent rafts is less than the width of five human hair. Because the imaging sensor is easy to crack, the whole operation is very difficult. < / P > < p > team members spent a year preparing for the raft installation, and they “practiced” by installing many rafts that did not officially enter the final focal plane assembly. This allowed them to refine the procedure for meshing each two foot high, 20 pound raft. Special gantry is used in the whole installation process. “The size of the individual camera component is impressive, and the size of the team is impressive,” said Tim bond, head of the LSST camera integration and testing team at SLAC. This requires a well-designed team to complete the assembly of the focal plane, and every staff member has taken up the challenge. ” < / P > < p > when shooting, the focal plane is placed in a cryostat, and the sensors are cooled to – 150 degrees Fahrenheit, the operating temperature they need. Due to the impact of the new coronavirus epidemic, the project team could not enter the laboratory for several months. In May this year, the team resumed work in strict accordance with the requirements of safe distance. Extensive testing is being carried out to ensure that the focal plane meets the technical requirements required to support the Rubin Observatory’s scientific program. < / P > < p > these tests involve taking 3.2 billion pixel pictures of various objects, including a Roman painting with a very fine surface structure. To do this, the SLAC team used a 150 micron pinhole to project the image onto the focal plane. These photos show the extraordinary details captured by imaging sensors and can be viewed online at full resolution. < / P > < p > taking these photos is a major achievement. Under strict specifications, the SLAC team has really broken through the limit of using every square millimeter of the focal plane to maximize its scientific ability. < / P > < p > in the next few months, they will insert a cryostat with a focal plane into the camera body and add lens to the camera, including the world’s largest optical lens, shutter and filter switching system for studying different color night sky. By mid-2021, the camera, the size of an SUV, will undergo final testing before leaving for Chile. Continue ReadingStraight screen S20! Samsung Galaxy S20 Fe exposure: 1Hz high brush + snapdragon 865