Simulating a dual beam combiner at SUSI for narrow-angle astrometry
| Autor: | Yitping Kok, J. Gordon Robertson, Michael J. Ireland, Vicente Maestro, Peter G. Tuthill |
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| Rok vydání: | 2013 |
| Předmět: |
Physics
business.industry Pipeline (computing) Astrophysics::Instrumentation and Methods for Astrophysics Measure (physics) FOS: Physical sciences Astronomy and Astrophysics Astrometry Stars Interferometry Optics Space and Planetary Science Binary star Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Astrophysics - Instrumentation and Methods for Astrophysics business Instrumentation and Methods for Astrophysics (astro-ph.IM) Beam (structure) Data reduction |
| Zdroj: | Experimental Astronomy. 36:195-221 |
| ISSN: | 1572-9508 0922-6435 |
| DOI: | 10.1007/s10686-013-9331-8 |
| Popis: | The Sydney University Stellar Interferometer (SUSI) has two beam combiners, i.e. the Precision Astronomical Visible Observations (PAVO) and the Microarcsecond University of Sydney Companion Astrometry (MUSCA). The primary beam combiner, PAVO, can be operated independently and is typically used to measure properties of binary stars of less than 50 milliarc- sec (mas) separation and the angular diameters of single stars. On the other hand, MUSCA was recently installed and must be used in tandem with the for- mer. It is dedicated for microarcsecond precision narrow-angle astrometry of close binary stars. The performance evaluation and development of the data reduction pipeline for the new setup was assisted by an in-house computer simulation tool developed for this and related purposes. This paper describes the framework of the simulation tool, simulations carried out to evaluate the performance of each beam combiner and the expected astrometric precision of the dual beam combiner setup, both at SUSI and possible future sites. Comment: 28 pages, 23 figures, accepted for publication in Experimental Astronomy. The final publication is available at http://link.springer.com |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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