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- Laser_guide_star abstract "Laser guide stars are an artificial star image created for use in astronomical adaptive optics imaging.Adaptive optics (AO) systems require a wavefront reference source in order to correct atmospheric distortion of light (called astronomical seeing). Sufficiently bright stars are not available in all parts of the sky, which greatly limits the usefulness of natural guide star adaptive optics. Instead, one can create an artificial guide star by shining a laser into the atmosphere. This star can be positioned anywhere the telescope desires to point, opening up much greater amounts of the sky to adaptive optics. Because the laser beam is deflected by astronomical seeing on the way up, the returning laser light does not move around in the sky as astronomical sources do. In order to keep astronomical images steady, a natural star nearby in the sky must be monitored in order that the motion of the laser guide star can be subtracted using a tip–tilt mirror. However, this star can be much fainter than is required for natural guide star adaptive optics, because it is only used to measure tip and tilt and all higher order distortions are measured with the laser guide star. This means that many more stars are suitable and a correspondingly larger fraction of the sky is accessible.".
- Laser_guide_star thumbnail Laser_Meets_Lightning.jpg?width=300.
- Laser_guide_star wikiPageExternalLink ann11039.
- Laser_guide_star wikiPageExternalLink esocast34a.
- Laser_guide_star wikiPageExternalLink index.php?option=content&task=view&id=226.
- Laser_guide_star wikiPageID "792946".
- Laser_guide_star wikiPageRevisionID "602958333".
- Laser_guide_star hasPhotoCollection Laser_guide_star.
- Laser_guide_star subject Category:Astronomical_imaging.
- Laser_guide_star subject Category:Laser_applications.
- Laser_guide_star type Abstraction100002137.
- Laser_guide_star type Application106570110.
- Laser_guide_star type Code106355894.
- Laser_guide_star type CodingSystem106353757.
- Laser_guide_star type Communication100033020.
- Laser_guide_star type LaserApplications.
- Laser_guide_star type Program106568978.
- Laser_guide_star type Software106566077.
- Laser_guide_star type Writing106359877.
- Laser_guide_star type WrittenCommunication106349220.
- Laser_guide_star comment "Laser guide stars are an artificial star image created for use in astronomical adaptive optics imaging.Adaptive optics (AO) systems require a wavefront reference source in order to correct atmospheric distortion of light (called astronomical seeing). Sufficiently bright stars are not available in all parts of the sky, which greatly limits the usefulness of natural guide star adaptive optics. Instead, one can create an artificial guide star by shining a laser into the atmosphere.".
- Laser_guide_star label "Künstlicher Leitstern".
- Laser_guide_star label "Laser guide star".
- Laser_guide_star label "Étoile guide laser".
- Laser_guide_star label "نجمة دليل الليزر".
- Laser_guide_star label "レーザーガイド星".
- Laser_guide_star label "雷射導引星".
- Laser_guide_star sameAs Künstlicher_Leitstern.
- Laser_guide_star sameAs Étoile_guide_laser.
- Laser_guide_star sameAs レーザーガイド星.
- Laser_guide_star sameAs m.03ch_8.
- Laser_guide_star sameAs Q901458.
- Laser_guide_star sameAs Q901458.
- Laser_guide_star sameAs Laser_guide_star.
- Laser_guide_star wasDerivedFrom Laser_guide_star?oldid=602958333.
- Laser_guide_star depiction Laser_Meets_Lightning.jpg.
- Laser_guide_star isPrimaryTopicOf Laser_guide_star.
