A1 Refereed original research article in a scientific journal
Double Image Polarimeter-Ultra Fast: Simultaneous Three-color (BV R) Polarimeter with Electron-multiplying Charge-coupled Devices
Authors: Piirola Vilppu, Kosenkov Ilia A, Berdyugin Andrei V, Berdyugina Svetlana V, Poutanen Juri
Publisher: IOP PUBLISHING LTD
Publication year: 2021
Journal: The Astronomical Journal
Journal name in source: ASTRONOMICAL JOURNAL
Journal acronym: ASTRON J
Article number: ARTN 20
Volume: 161
Issue: 1
Number of pages: 9
ISSN: 0004-6256
eISSN: 1538-3881
DOI: https://doi.org/10.3847/1538-3881/abc74f
Web address : https://iopscience.iop.org/article/10.3847/1538-3881/abc74f
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/51020193
We describe a new instrument capable of high-precision (10(-5)) polarimetric observations simultaneously in three passbands (BVR). The instrument utilizes electron-multiplying charge-coupled device (EM CCD) cameras for high efficiency and fast image readout. The key features of the Double Image Polarimeter-Ultra Fast (DIPol-UF) are: (i) the optical design with high throughput and inherent stability; (ii) great versatility, which makes the instrument optimally suitable for observations of bright and faint targets; and (iii) a control system, which allows the use of the polarimeter remotely. Examples are given of the first results obtained from high signal-to-noise observations of bright nearby stars and of fainter sources such as X-ray binaries in their quiescent states.
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