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Improving polarimetric accuracy of RoboPol to < 0.05 % using a half-wave plate calibrator system. / Maharana, S.; Blinov, D.; Ramaprakash, A.N.; Pavlidou, V.; Tassis, K.; J.J., Bryant (редактор); K., Motohara (редактор); J.R., Vernet (редактор); (SPIE), City of Yokohama; Japan National Tourism Organization (JNTO); National Astronomical Observatory of Japan (NAOJ); National Institute of Information and Communications Technology (NICT); The Society of Photo-Optical Instrumentation Engineers.

2024. Работа представлена на Ground-Based and Airborne Instrumentation for Astronomy X 2024.

Результаты исследований: Материалы конференций › материалы › Рецензирование

Harvard

Maharana, S, Blinov, D, Ramaprakash, AN, Pavlidou, V, Tassis, K, J.J., B (ред.), K., M (ред.), J.R., V (ред.) & (SPIE), COYJNTOJNTONAOOJNAOJNIOIACTNICTTSOP-OIE 2024, 'Improving polarimetric accuracy of RoboPol to < 0.05 % using a half-wave plate calibrator system', Работа представлена на Ground-Based and Airborne Instrumentation for Astronomy X 2024, 16/06/24 - 20/06/24. https://doi.org/10.1117/12.3021523

APA

Maharana, S., Blinov, D., Ramaprakash, A. N., Pavlidou, V., Tassis, K., J.J., B. (Ред.), K., M. (Ред.), J.R., V. (Ред.), & (SPIE), C. O. Y. J. N. T. O. JNTO. N. A. O. O. J. NAOJ. N. I. O. I. A. C. T. NICT. T. S. O. P-O. I. E. (2024). Improving polarimetric accuracy of RoboPol to < 0.05 % using a half-wave plate calibrator system. Работа представлена на Ground-Based and Airborne Instrumentation for Astronomy X 2024. https://doi.org/10.1117/12.3021523

Vancouver

Maharana S, Blinov D, Ramaprakash AN, Pavlidou V, Tassis K, J.J. B, (ed.) и пр.. Improving polarimetric accuracy of RoboPol to < 0.05 % using a half-wave plate calibrator system. 2024. Работа представлена на Ground-Based and Airborne Instrumentation for Astronomy X 2024. https://doi.org/10.1117/12.3021523

Author

Maharana, S. ; Blinov, D. ; Ramaprakash, A.N. ; Pavlidou, V. ; Tassis, K. ; J.J., Bryant (редактор) ; K., Motohara (редактор) ; J.R., Vernet (редактор) ; (SPIE), City of Yokohama; Japan National Tourism Organization (JNTO); National Astronomical Observatory of Japan (NAOJ); National Institute of Information and Communications Technology (NICT); The Society of Photo-Optical Instrumentation Engineers. / Improving polarimetric accuracy of RoboPol to < 0.05 % using a half-wave plate calibrator system. Работа представлена на Ground-Based and Airborne Instrumentation for Astronomy X 2024.

BibTeX

@conference{da84b595dc4a40a8938dd28d69fd5aab,
title = "Improving polarimetric accuracy of RoboPol to < 0.05 % using a half-wave plate calibrator system",
abstract = "RoboPol is a four-channel, one-shot linear optical polarimeter that has been successfully operating since 2013 on the 1.3 m telescope at Skinakas Observatory in Crete, Greece. Using its unique optical system, it measures the linear Stokes parameters q and u in a single exposure with high polarimetric accuracy of 0.1%-0.15% and 1 degree in polarization angle in the R broadband filter. Its performance marginally degrades in other broadband filters. The source of the current instrumental performance limit has been identified as unaccounted and variable instrumental polarization, most likely originating from factors such as temperature and gravity-induced instrument flexure. To improve the performance of RoboPol in all broadband filters, including R, we have developed a rotating half-wave plate calibrator system. This calibrator system is placed at the beginning of the instrument and enables modulation of polarimetric measurements by beam swapping between all four channels of RoboPol. Using the new calibrator system, we observed multiple polarimetric standard stars over two annual observing seasons with RoboPol. This has enabled us to achieve a polarimetric accuracy of better than 0.05 % in both q and u, and 0.5 degrees in polarization angle across all filters, enhancing the instrument's performance by a factor of two to three. {\textcopyright} 2024 SPIE.",
keywords = "imaging polarimetry, linear polarimetry, one-shot polarimetry, optical polarimeter, polarimetric calibration, polarimetry, polarization, RoboPol",
author = "S. Maharana and D. Blinov and A.N. Ramaprakash and V. Pavlidou and K. Tassis and Bryant J.J. and Motohara K. and Vernet J.R. and (SPIE), {City of Yokohama; Japan National Tourism Organization (JNTO); National Astronomical Observatory of Japan (NAOJ); National Institute of Information and Communications Technology (NICT); The Society of Photo-Optical Instrumentation Engineers}",
note = "Код конференции: 202825 Export Date: 21 October 2024 CODEN: PSISD Адрес для корреспонденции: Maharana, S.; South African Astronomical Observatory, PO Box 9, Observatory, South Africa; эл. почта: siddharth@saao.ac.za; null ; Conference date: 16-06-2024 Through 20-06-2024",
year = "2024",
month = jul,
day = "18",
doi = "10.1117/12.3021523",
language = "Английский",

}

RIS

TY - CONF

T1 - Improving polarimetric accuracy of RoboPol to < 0.05 % using a half-wave plate calibrator system

AU - Maharana, S.

AU - Blinov, D.

AU - Ramaprakash, A.N.

AU - Pavlidou, V.

AU - Tassis, K.

AU - (SPIE), City of Yokohama; Japan National Tourism Organization (JNTO); National Astronomical Observatory of Japan (NAOJ); National Institute of Information and Communications Technology (NICT); The Society of Photo-Optical Instrumentation Engineers

A2 - J.J., Bryant

A2 - K., Motohara

A2 - J.R., Vernet

N1 - Код конференции: 202825 Export Date: 21 October 2024 CODEN: PSISD Адрес для корреспонденции: Maharana, S.; South African Astronomical Observatory, PO Box 9, Observatory, South Africa; эл. почта: siddharth@saao.ac.za

PY - 2024/7/18

Y1 - 2024/7/18

N2 - RoboPol is a four-channel, one-shot linear optical polarimeter that has been successfully operating since 2013 on the 1.3 m telescope at Skinakas Observatory in Crete, Greece. Using its unique optical system, it measures the linear Stokes parameters q and u in a single exposure with high polarimetric accuracy of 0.1%-0.15% and 1 degree in polarization angle in the R broadband filter. Its performance marginally degrades in other broadband filters. The source of the current instrumental performance limit has been identified as unaccounted and variable instrumental polarization, most likely originating from factors such as temperature and gravity-induced instrument flexure. To improve the performance of RoboPol in all broadband filters, including R, we have developed a rotating half-wave plate calibrator system. This calibrator system is placed at the beginning of the instrument and enables modulation of polarimetric measurements by beam swapping between all four channels of RoboPol. Using the new calibrator system, we observed multiple polarimetric standard stars over two annual observing seasons with RoboPol. This has enabled us to achieve a polarimetric accuracy of better than 0.05 % in both q and u, and 0.5 degrees in polarization angle across all filters, enhancing the instrument's performance by a factor of two to three. © 2024 SPIE.

AB - RoboPol is a four-channel, one-shot linear optical polarimeter that has been successfully operating since 2013 on the 1.3 m telescope at Skinakas Observatory in Crete, Greece. Using its unique optical system, it measures the linear Stokes parameters q and u in a single exposure with high polarimetric accuracy of 0.1%-0.15% and 1 degree in polarization angle in the R broadband filter. Its performance marginally degrades in other broadband filters. The source of the current instrumental performance limit has been identified as unaccounted and variable instrumental polarization, most likely originating from factors such as temperature and gravity-induced instrument flexure. To improve the performance of RoboPol in all broadband filters, including R, we have developed a rotating half-wave plate calibrator system. This calibrator system is placed at the beginning of the instrument and enables modulation of polarimetric measurements by beam swapping between all four channels of RoboPol. Using the new calibrator system, we observed multiple polarimetric standard stars over two annual observing seasons with RoboPol. This has enabled us to achieve a polarimetric accuracy of better than 0.05 % in both q and u, and 0.5 degrees in polarization angle across all filters, enhancing the instrument's performance by a factor of two to three. © 2024 SPIE.

KW - imaging polarimetry

KW - linear polarimetry

KW - one-shot polarimetry

KW - optical polarimeter

KW - polarimetric calibration

KW - polarimetry

KW - polarization

KW - RoboPol

UR - https://www.mendeley.com/catalogue/048ed15c-ef44-39da-ba48-8a6cb2a4e8da/

U2 - 10.1117/12.3021523

DO - 10.1117/12.3021523

M3 - материалы

Y2 - 16 June 2024 through 20 June 2024

ER -

ID: 126225012