Context: The Vera C. Rubin Observatory is set to become fully operational by the end of 2025.
Relevance of the Topic: Prelims: Key facts about Vera C. Rubin Observatory.
About Vera C. Rubin Observatory:
- Formerly known as the Large Synoptic Survey Telescope (LSST), it is a large astronomical observatory designed to conduct a ten-year survey of the entire visible southern sky.
- Location: 8,684 feet above sea level on Cerro Pachón mountain in Chile.
- It is named after Vera C. Rubin who provided the first evidence of dark matter in the 1970s.
- It is a joint project of the US National Science Foundation (NSF) and the US Department of Energy's Office of Science.

Key Features:
The centerpiece of the Rubin Observatory is the Simonyi Survey Telescope. This device is unique for three main reasons:
- Wide Field of View:
- Most telescopes observe only tiny portions of the sky (E.g., Hubble sees just 1% of the full Moon’s disc).
- The Simonyi Survey telescope can observe an area equivalent to 40 full moons at once, due to its distinct design comprising three differently curved mirrors.
- Largest Digital Camera:
- The telescope has the world's largest digital camera, which is the size of a small car, weighs 2,800 kg, and boasts a staggering resolution of 3,200 megapixels.
- It can detect objects 100 million times dimmer than visible to the naked eye.
- The camera has six filters designed to capture light from different parts of the electromagnetic spectrum. This will help astronomers gather information about various celestial objects based on the type of light they emit.
- Fastest-Slewing Telescope:
- The Simonyi Survey Telescope is the fastest-slewing telescope in the world, and takes just five seconds to move and settle from one target to another.
- This speed is due to the telescope’s compact structure (owing to the three-mirror design), and its mount which floats on a film of oil.
- Such speed will allow the telescope to snap up to 1,000 images a night, meaning it can capture the whole sky in just three days.

Why is Rubin Observatory Revolutionary?
- The Vera Rubin Observatory will constantly scan the sky of the southern hemisphere for 10 years, this continuous scanning helps detect even small or sudden changes in the universe.
- It captures 20 terabytes of data each night. This massive data pool will help solve some of the biggest mysteries of the universe, and discover numerous celestial objects such as comets and asteroids.
- It took 225 years of astronomical observations to detect the first 1.5 million asteroids, Rubin will double that number in less than a year.
- On June 23, when the first test images of the observatory were released, astronomers at the Rubin Observatory said that its software had identified 2,104 brand-new asteroids- including seven near-Earth objects with merely 10 hours of engineering data.
The observatory will expand our knowledge about the nature of dark matter and dark energy. While galaxies, stars, and planets make up 5% of the universe, dark energy makes up about 68%, and dark matter about 27%.





