First laboratory results from the Pollux UV test bench demonstrate working polarization generation, a first end-to-end polarimetric measurement, and a far-UV analyser with extinction ratio 10 at 120 nm.
CASSTOR: a scientific and technology nanosatellite demonstrator for UV spectropolarimetry
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abstract
In the context of the development of several space mission projects for UV spectropolarimetry at high resolution and over a wide UV wavelength range, such as Arago, Polstar, and Pollux onboard the Habitable Worlds Observatory, we are studying and developing the UV nanosatellite CASSTOR to obtain the very first UV spectropolarimetric observations of hot stars and test several new technologies, in particular a UV polarimeter and a Fine Guiding System. In this paper, we present the work and outcome of the Phase 0 study of CASSTOR.
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Pollux UV & FUV polarimeters: first lab results
First laboratory results from the Pollux UV test bench demonstrate working polarization generation, a first end-to-end polarimetric measurement, and a far-UV analyser with extinction ratio 10 at 120 nm.