![Pollux optical layout. The exact sequence in the optical path of the retractable polarimeters and fiber link connections of the OPT and NIR is still to be discussed and what shown here is not representative of the final configuration. -- [astro-ph.IM]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/08/Pollux.png?fit=1200%2C671&ssl=1)
[astro-ph.IM] Pollux is a high-resolution spectrograph and spectropolarimeter (R from 65000 to 100000) covering a spectral range from 100 nm to 1750 nm, proposed by a European consortium to equip NASA’s Habitable Worlds Observatory (HWO).
This instrument aims to revolutionize the study of stellar and (exo)planetary systems, as well as cosmic ecosystems, by combining high spectral resolution, broad and simultaneous spectral coverage, temporal stability, and unique UV spectropolarimetric capabilities, thus opening a new parameter space for astrophysics.
David Le Mignant, Coralie Neiner, Jean-Claude Bouret, Luca Fossati, Eduard Muslimov, Kjetil Dohlen, Anne Bonnefoi, Jean-Michel Reess, Mélissa Alliguié, Sreejith A. G., Aquib Moine, Adrien Girardot, for the Pollux consortium
Comments: 10 pages, 4 figures, SPIE Astronomical Telescopes + Instrumentation 2026
Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM)
Cite as: arXiv:2608.00522 [astro-ph.IM] (or arXiv:2608.00522v1 [astro-ph.IM] for this version)
https://doi.org/10.48550/arXiv.2608.00522
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Submission history
From: David Le Mignant
[v1] Sat, 1 Aug 2026 08:31:37 UTC (1,714 KB)
https://arxiv.org/abs/2608.00522
Astrobiology, Astronomy,
