Astronomical and Astrophysical Objectives of Sub-Milliarcsecond Optical Astrometry: Proceedings of the 166th Symposium of the International Astronomical Union, Held in the Hague, The Netherlands, August 15–19, 1994
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| Weitere Verfasser: | , |
|---|---|
| Format: | Elektronisch E-Book |
| Sprache: | English |
| Veröffentlicht: |
Dordrecht
Springer Netherlands
1995
|
| Schriftenreihe: | International Astronomical Union : Symposium
166 |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Beschreibung: | Astrometry is on the threshold of great changes due to the fact that this decade, alone, is witnessing an improvement of stellar positions equivalent to the total improvement of the previous two centuries. The Hipparcos Satellite has concluded its observations, and the catalog is in preparation. Preliminary results assure that the Hipparcos catalog will provide positions, parallaxes and annual proper motions for over 100,000 stars with accuracies of 1.5 milliarcseconds. In addition, the Tycho catalog will provide positions of about 30 milliarcseconds accuracy for over 1 million stars, and annual proper motions with 3 milliarcsecond accuracy will subsequently be obtained by means of first epoch positions from the Astrographic Catalog. Optical interferometers on the ground are beginning operation, and these instruments can provide observational accuracies of approximately one milliarcsecond. Also, the traditional reference frame based on the Fundamental Catalog of bright stars is being replaced by the extragalactic reference frame, based on radio sources with accuracies of one milliarcsecond. Thus, astrometry will change from a fundamental reference frame defined in terms of the dynamical reference frame of the solar system with accuracies of 100 milliarcseconds to a space-fixed, extragalactic reference frame with accuracies of one milliarcsecond. Future astrometric observations should be in the 1 -100 milliarcsecond accuracy range. There are a number of concepts for future astrometric instruments in space. Most of these can provide sub-milliarcsecond astrometric accuracies |
| Beschreibung: | 1 Online-Ressource (XVI, 441 p) |
| ISBN: | 9789401100694 9780792334439 |
| DOI: | 10.1007/978-94-011-0069-4 |
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| 245 | 1 | 0 | |a Astronomical and Astrophysical Objectives of Sub-Milliarcsecond Optical Astrometry |b Proceedings of the 166th Symposium of the International Astronomical Union, Held in the Hague, The Netherlands, August 15–19, 1994 |c edited by Erik Høg, P. Kenneth Seidelmann |
| 246 | 1 | 3 | |a Proceedings of the 166th Symposium of the International Astronomical Union held in The Hague, the Netherlands, August 15--19, 1994 |
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Datensatz im Suchindex
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| discipline | Physik |
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| spelling | Høg, Erik edt Astronomical and Astrophysical Objectives of Sub-Milliarcsecond Optical Astrometry Proceedings of the 166th Symposium of the International Astronomical Union, Held in the Hague, The Netherlands, August 15–19, 1994 edited by Erik Høg, P. Kenneth Seidelmann Proceedings of the 166th Symposium of the International Astronomical Union held in The Hague, the Netherlands, August 15--19, 1994 Dordrecht Springer Netherlands 1995 1 Online-Ressource (XVI, 441 p) txt rdacontent c rdamedia cr rdacarrier International Astronomical Union : Symposium 166 Astrometry is on the threshold of great changes due to the fact that this decade, alone, is witnessing an improvement of stellar positions equivalent to the total improvement of the previous two centuries. The Hipparcos Satellite has concluded its observations, and the catalog is in preparation. Preliminary results assure that the Hipparcos catalog will provide positions, parallaxes and annual proper motions for over 100,000 stars with accuracies of 1.5 milliarcseconds. In addition, the Tycho catalog will provide positions of about 30 milliarcseconds accuracy for over 1 million stars, and annual proper motions with 3 milliarcsecond accuracy will subsequently be obtained by means of first epoch positions from the Astrographic Catalog. Optical interferometers on the ground are beginning operation, and these instruments can provide observational accuracies of approximately one milliarcsecond. Also, the traditional reference frame based on the Fundamental Catalog of bright stars is being replaced by the extragalactic reference frame, based on radio sources with accuracies of one milliarcsecond. Thus, astrometry will change from a fundamental reference frame defined in terms of the dynamical reference frame of the solar system with accuracies of 100 milliarcseconds to a space-fixed, extragalactic reference frame with accuracies of one milliarcsecond. Future astrometric observations should be in the 1 -100 milliarcsecond accuracy range. There are a number of concepts for future astrometric instruments in space. Most of these can provide sub-milliarcsecond astrometric accuracies Physics Astronomy, Observations and Techniques Astrometrie (DE-588)4207657-2 gnd rswk-swf 1\p (DE-588)1071861417 Konferenzschrift 1994 Den Haag gnd-content Astrometrie (DE-588)4207657-2 s 2\p DE-604 Seidelmann, P. Kenneth edt International Astronomical Union Symposium 166 (DE-604)BV000000364 166 https://doi.org/10.1007/978-94-011-0069-4 Verlag Volltext 1\p cgwrk 20201028 DE-101 https://d-nb.info/provenance/plan#cgwrk 2\p cgwrk 20201028 DE-101 https://d-nb.info/provenance/plan#cgwrk |
| spellingShingle | Astronomical and Astrophysical Objectives of Sub-Milliarcsecond Optical Astrometry Proceedings of the 166th Symposium of the International Astronomical Union, Held in the Hague, The Netherlands, August 15–19, 1994 Physics Astronomy, Observations and Techniques Astrometrie (DE-588)4207657-2 gnd |
| subject_GND | (DE-588)4207657-2 (DE-588)1071861417 |
| title | Astronomical and Astrophysical Objectives of Sub-Milliarcsecond Optical Astrometry Proceedings of the 166th Symposium of the International Astronomical Union, Held in the Hague, The Netherlands, August 15–19, 1994 |
| title_alt | Proceedings of the 166th Symposium of the International Astronomical Union held in The Hague, the Netherlands, August 15--19, 1994 |
| title_auth | Astronomical and Astrophysical Objectives of Sub-Milliarcsecond Optical Astrometry Proceedings of the 166th Symposium of the International Astronomical Union, Held in the Hague, The Netherlands, August 15–19, 1994 |
| title_exact_search | Astronomical and Astrophysical Objectives of Sub-Milliarcsecond Optical Astrometry Proceedings of the 166th Symposium of the International Astronomical Union, Held in the Hague, The Netherlands, August 15–19, 1994 |
| title_full | Astronomical and Astrophysical Objectives of Sub-Milliarcsecond Optical Astrometry Proceedings of the 166th Symposium of the International Astronomical Union, Held in the Hague, The Netherlands, August 15–19, 1994 edited by Erik Høg, P. Kenneth Seidelmann |
| title_fullStr | Astronomical and Astrophysical Objectives of Sub-Milliarcsecond Optical Astrometry Proceedings of the 166th Symposium of the International Astronomical Union, Held in the Hague, The Netherlands, August 15–19, 1994 edited by Erik Høg, P. Kenneth Seidelmann |
| title_full_unstemmed | Astronomical and Astrophysical Objectives of Sub-Milliarcsecond Optical Astrometry Proceedings of the 166th Symposium of the International Astronomical Union, Held in the Hague, The Netherlands, August 15–19, 1994 edited by Erik Høg, P. Kenneth Seidelmann |
| title_short | Astronomical and Astrophysical Objectives of Sub-Milliarcsecond Optical Astrometry |
| title_sort | astronomical and astrophysical objectives of sub milliarcsecond optical astrometry proceedings of the 166th symposium of the international astronomical union held in the hague the netherlands august 15 19 1994 |
| title_sub | Proceedings of the 166th Symposium of the International Astronomical Union, Held in the Hague, The Netherlands, August 15–19, 1994 |
| topic | Physics Astronomy, Observations and Techniques Astrometrie (DE-588)4207657-2 gnd |
| topic_facet | Physics Astronomy, Observations and Techniques Astrometrie Konferenzschrift 1994 Den Haag |
| url | https://doi.org/10.1007/978-94-011-0069-4 |
| volume_link | (DE-604)BV000000364 |
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