Double Image Polarimeter-Ultra Fast: Simultaneous Three-color (BV R) Polarimeter with Electron-multiplying Charge-coupled Devices



: Piirola Vilppu, Kosenkov Ilia A, Berdyugin Andrei V, Berdyugina Svetlana V, Poutanen Juri

Publisher: IOP PUBLISHING LTD

: 2021

: The Astronomical Journal

: ASTRONOMICAL JOURNAL

: ASTRON J

: ARTN 20

: 161

: 1

: 9

: 0004-6256

: 1538-3881

DOI: https://doi.org/10.3847/1538-3881/abc74f

: https://iopscience.iop.org/article/10.3847/1538-3881/abc74f

: 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.

Last updated on 2024-26-11 at 23:41