{"product_id":"laser-guide-star-adaptive-optics-for-astronomy-von-n-ageorges-c-dainty-hrsg","title":"Laser Guide Star Adaptive Optics for Astronomy","description":"\n                                Adaptive optics allows the theoretical limit of angular  resolution to be achieved from a large telescope, despite the presence  of turbulence. Thus an eight meter class telescope, such as one of the  four in the Very Large Telescope operated by ESO in Chile, will in  future be routinely capable of an angular resolution of almost 0.01  arcsec, compared tot he present resolution of about 0.5 arcsec for  conventional imaging in good condition. \n                \n                \u003cbr\u003e\n                                  All the world's major telescopes either have adaptive optics or are in  the process of building AO systems. It turns out that a reasonable  fraction of the sky can be observed using adaptive optics, with  moderately good imaging quality, provided imaging in done in the near  IR. To move out of the near IR, with its relatively poor angular  resolution, astronomers need a laser guide star. There is a layer of  Na atoms at approximately 90 km altitude that can be excited by a  laser to produce such a source, or Rayleigh scattering can be employed  lower in the atmosphere. But the production and use of laser guide  stars is not trivial, and the key issues determining their successful  implementation are discussed here, including the physics of the Na  atom, the cone effect, tilt determination, sky coverage, and numerous  potential astronomical applications.\n            \n            \u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9780792363811\"\u003e\u003ch3\u003e\u003c\/h3\u003e\u003c\/div\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9789048154920\"\u003e\u003ch3\u003e\u003c\/h3\u003e\u003c\/div\u003e","brand":"Libri","offers":[{"title":"Hardcover - 9780792363811","offer_id":50726795078,"sku":"9780792363811","price":213.99,"currency_code":"EUR","in_stock":true},{"title":"Softcover - 9789048154920","offer_id":39415639179357,"sku":"9789048154920","price":213.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/5a5fc90e-ec18-4f21-a81c-50cd0e31d04e.jpg?v=1761717669","url":"https:\/\/shop.autorenwelt.de\/products\/laser-guide-star-adaptive-optics-for-astronomy-von-n-ageorges-c-dainty-hrsg","provider":"Autorenwelt Shop","version":"1.0","type":"link"}