期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 449, 期 3, 页码 3064-3073出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stv519
关键词
polarization; instrumentation: polarimeters; techniques: polarimetric
资金
- Australian Research Council [DP140100121]
- UNSW Faculty of Science through Faculty Research Grants programme
- Science and Technology Facilities Council [ST/M001008/1] Funding Source: researchfish
- STFC [ST/M001008/1] Funding Source: UKRI
We describe the HIgh Precision Polarimetric Instrument (HIPPI), a polarimeter built at UNSW (The University of New South Wales) Australia and used on the Anglo-Australian Telescope (AAT). HIPPI is an aperture polarimeter using a ferro-electric liquid crystal modulator. HIPPI measures the linear polarization of starlight with a sensitivity in fractional polarization of similar to 4 x 10(-6) on low-polarization objects and a precision of better than 0.01 per cent on highly polarized stars. The detectors have a high dynamic range allowing observations of the brightest stars in the sky as well as much fainter objects. The telescope polarization of the AAT is found to be 48 +/- 5 x 10(-6) in the g' band.
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