Tag

Artificial Star

All articles tagged with #artificial star

astronomy1 year ago•2 min saved

"Astronomers Create 'Artificial Star' in Hawaii for Space Photo of the Week"

Astronomers at the Gemini North telescope in Hawaii are using adaptive optics and a yellow laser to create an "artificial star" in the Earth's atmosphere, allowing the telescope to correct for the distortions caused by atmospheric turbulence. This technology enables ground-based telescopes to achieve resolutions comparable to space-based telescopes like the Hubble and James Webb Space Telescope, potentially leading to higher-resolution images of stars, planets, and galaxies, as well as the direct imaging of exoplanets.

via Livescience.com|

#adaptive-optics #artificial-star #astronomy

technology2 years ago•1 min saved

Testing Satellite Navigation Systems with an 'Artificial Star' (Photo)

The European Space Agency's European Space Research and Technology Centre (ESTEC) uses an artificial star in their testing facility to simulate the color and brightness of a given star. Star trackers, which are commonly used by satellites and spacecraft to determine their position, rely on capturing the sky with a camera and referencing it against a catalogue of known stars. The star simulators, like the one at ESTEC, are crucial for testing these star trackers before they are launched into space.

via Space.com|

#artificial-star #european-space-agency #satellite-navigation-systems

space-technology2 years ago•1 min saved

"ESA Develops Artificial Star for Groundbreaking Research"

The European Space Agency (ESA) has developed an artificial star-like light source to test the optical performance of startrackers, which are used by spacecraft to determine their position in space. The test bench, located at ESA's ESTEC technical centre in the Netherlands, combines a rotating table with a single star simulator to simulate the light from a star. The purpose of this facility is to calibrate startrackers in terms of distortion, chromatic aberration, and other optical variables, aiding in spacecraft navigation.

via European Space Agency|

#artificial-star #calibration #optical-performance