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  • Open Daily: 10am - 10pm
    Alley-side Pickup: 10am - 7pm

    3038 Hennepin Ave Minneapolis, MN
    612-822-4611

Open Daily: 10am - 10pm | Alley-side Pickup: 10am - 7pm
3038 Hennepin Ave Minneapolis, MN
612-822-4611
Census of the Galaxy: Challenges for Photometry and Spectrometry with Gaia: Proceedings of the Workshop Held in Vilnius, Lithuania 2-6 July 2001

Census of the Galaxy: Challenges for Photometry and Spectrometry with Gaia: Proceedings of the Workshop Held in Vilnius, Lithuania 2-6 July 2001

Vansevicius, Vladas
Kucinskas, Arunas
Sudzius, Jokubas

Paperback

Astronomy & SpaceGeneral SciencePhysics

ISBN10: 9401039119
ISBN13: 9789401039116
Publisher: Springer Nature
Published: Sep 17 2012
Pages: 194
Weight: 0.66
Height: 0.44 Width: 6.14 Depth: 9.21
Language: English
Astrometry 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.

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