{"product_id":"census-of-the-galaxy-challenges-for-photometry-and-spectrometry-with-gaia-proceedings-of-the-workshop-held-in-2","title":"Census of the Galaxy: Challenges for Photometry and Spectrometry with GAIA","description":"\u003cp\u003e\"Census of the Galaxy: Challenges for Photometry and Spectrometry with GAIA\" by Vladas Vansevicius, Arunas Kucinskas, Jokubas Sudzius is a astronomy book and space science reference focused on Deep Sky \u0026amp; Solar System. Best for students, researchers, and serious astronomy enthusiasts.\u003c\/p\u003e\n\u003cp\u003eAstrometry from space was performed for the first time and with great success by the ESA Hipparcos satellite (1989-93). This mission was designed as an as trometry mission, but the use of a photon counting detector made it possible to produce very important photometric results: the most accurate astronomical pho tometry ever by the main Hipparcos mission in a very broad band of 120000 stars, and the two-colour Tycho-2 photometry of 2.5 million stars. The cornerstone ESA mission GAIA was approved in October 2000 for launch not later than 2012. This mission will use CCDs in time-delayed integration mode instead of the photo-cathode detectors used in Hipparcos. Due to the higher quantum efficiency of the CCDs, simultaneous integration of many stars, and larger tele scope apertures GAIA will utilize the star light a million times more efficiently than Hipparcos, resulting in astrometry and multi-colour photometry for one billion stars. GAIA photometry is crucial for the scientific utilization of the astrometric results, and the photometric data have a high scientific content in themselves.\u003c\/p\u003e","brand":"Springer Science \u0026 Business Media","offers":[{"title":"Default Title","offer_id":46417925505223,"sku":"1-99-523-000375","price":109.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/9575\/6487\/files\/9781402005961.jpg?v=1776311024","url":"https:\/\/snowflakeskies.com\/products\/census-of-the-galaxy-challenges-for-photometry-and-spectrometry-with-gaia-proceedings-of-the-workshop-held-in-2","provider":"Snowflake Skies","version":"1.0","type":"link"}