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Bright-Moon sky as ...
Bright-Moon sky as a wide-field linear Polarimetric flat source for calibration
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- Maharana, S. (författare)
- South African Astronomical Observatory,Panepistimio Kritis,University of Crete,Inter-University Centre for Astronomy and Astrophysics (IUCAA),Idryma Technologias kai Erevnas (FORTH),Foundation for Research and Technology Hellas (FORTH)
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- Kiehlmann, S. (författare)
- Panepistimio Kritis,University of Crete,Idryma Technologias kai Erevnas (FORTH),Foundation for Research and Technology Hellas (FORTH)
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- Blinov, D. (författare)
- Idryma Technologias kai Erevnas (FORTH),Foundation for Research and Technology Hellas (FORTH),Panepistimio Kritis,University of Crete
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- Pelgrims, V. (författare)
- Panepistimio Kritis,University of Crete,Université libre de Bruxelles (ULB),Idryma Technologias kai Erevnas (FORTH),Foundation for Research and Technology Hellas (FORTH)
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- Pavlidou, V. (författare)
- Panepistimio Kritis,University of Crete,Idryma Technologias kai Erevnas (FORTH),Foundation for Research and Technology Hellas (FORTH)
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- Tassis, Konstantinos (författare)
- Panepistimio Kritis,University of Crete,Idryma Technologias kai Erevnas (FORTH),Foundation for Research and Technology Hellas (FORTH)
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- Kypriotakis, J. A. (författare)
- Idryma Technologias kai Erevnas (FORTH),Foundation for Research and Technology Hellas (FORTH),Panepistimio Kritis,University of Crete
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- Ramaprakash, A. N. (författare)
- Idryma Technologias kai Erevnas (FORTH),Foundation for Research and Technology Hellas (FORTH),California Institute of Technology (Caltech),Inter-University Centre for Astronomy and Astrophysics (IUCAA)
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- Anche, R. M. (författare)
- University of Arizona
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- Basyrov, A. (författare)
- Universitetet i Oslo,University of Oslo
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- Deka, K. (författare)
- Homi Bhabha National Institute (HBNI)
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- Eriksen, H. K. (författare)
- Universitetet i Oslo,University of Oslo
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- Ghosh, T. (författare)
- Homi Bhabha National Institute (HBNI)
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- Gjerløw, E. (författare)
- Universitetet i Oslo,University of Oslo
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- Mandarakas, N. (författare)
- Idryma Technologias kai Erevnas (FORTH),Foundation for Research and Technology Hellas (FORTH),Panepistimio Kritis,University of Crete
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- Ntormousi, E. (författare)
- Idryma Technologias kai Erevnas (FORTH),Foundation for Research and Technology Hellas (FORTH),Panepistimio Kritis,University of Crete
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- Panopoulou, Georgia, 1989 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Papadaki, A. (författare)
- Idryma Technologias kai Erevnas (FORTH),Foundation for Research and Technology Hellas (FORTH),Panepistimio Kritis,University of Crete
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- Pearson, T. J. (författare)
- California Institute of Technology (Caltech)
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- Potter, S. B. (författare)
- University of Johannesburg,South African Astronomical Observatory
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- Readhead, A. C.S. (författare)
- California Institute of Technology (Caltech),Idryma Technologias kai Erevnas (FORTH),Foundation for Research and Technology Hellas (FORTH)
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- Skalidis, R. (författare)
- California Institute of Technology (Caltech)
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- Wehus, I. K. (författare)
- Universitetet i Oslo,University of Oslo
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(creator_code:org_t)
- 2023
- 2023
- Engelska.
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Ingår i: Astronomy and Astrophysics. - 0004-6361 .- 1432-0746. ; 679
- Relaterad länk:
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https://research.cha... (primary) (free)
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https://doi.org/10.1...
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https://research.cha...
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Abstract
Ämnesord
Stäng
- Context. Next-generation wide-field optical polarimeters such as Wide-Area Linear Optical Polarimeters (WALOPs) have a field of view (FoV) of tens of arcminutes. Wide-field polarimetric flat sources are essential to the efficient and accurate calibration of these instruments. However, no established wide-field polarimetric standard or flat sources exist at present. Aims. This study tests the feasibility of using the polarized sky patches of the size of around 10 × 10 arcminutes2, at a distance of up to 20 from the Moon, on bright-Moon nights as a wide-field linear polarimetric flat source. Methods. We observed 19 patches of the sky adjacent to the bright-Moon with the RoboPol instrument in the SDSS-r broadband filter. These patches were observed on five nights within two days of the full-Moon across two RoboPol observing seasons. Results. We find that for 18 of the 19 patches, the uniformity in the measured normalized Stokes parameters q and u is within 0.2%, with 12 patches exhibiting uniformity within 0.07% or better for both q and u simultaneously, making them reliable and stable wide-field linear polarization flats. Conclusions. We demonstrate that the sky on bright-Moon nights is an excellent wide-field linear polarization flat source. Various combinations of the normalized Stokes parameters q and u can be obtained by choosing suitable locations of the sky patch with respect to the Moon.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- Moon
- Techniques: polarimetric
- Atmospheric effects
- Instrumentation: polarimeters
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- art (ämneskategori)
- ref (ämneskategori)
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Maharana, S.
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Kiehlmann, S.
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Blinov, D.
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Pelgrims, V.
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Pavlidou, V.
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Tassis, Konstant ...
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visa fler...
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Kypriotakis, J. ...
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Ramaprakash, A. ...
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Anche, R. M.
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Basyrov, A.
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Deka, K.
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Eriksen, H. K.
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Ghosh, T.
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Gjerløw, E.
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Mandarakas, N.
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Ntormousi, E.
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Panopoulou, Geor ...
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Papadaki, A.
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Pearson, T. J.
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Potter, S. B.
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Readhead, A. C.S ...
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Skalidis, R.
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Wehus, I. K.
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visa färre...
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