Polarimeter with a high-speed rotating waveplate for the solar observation

Yoichiro Hanaoka

doi:10.1117/12.925304

24 September 2012 Polarimeter with a high-speed rotating waveplate for the solar observation

Yoichiro Hanaoka

Proceedings Volume 8446, Ground-based and Airborne Instrumentation for Astronomy IV; 844670 (2012) https://doi.org/10.1117/12.925304
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

We developed a polarimeter for the ground-based solar observation using a high-speed rotating waveplate (typically 12.5–25 revolutions s⁻¹) and a high-speed camera (typically 200–400 frames s⁻¹) with commercially available devices. Fast polarization modulation is required for the ground-based solar polarimetry to avoid producing seeing-induced false polarization signals. Modulation with a high-speed rotating waveplate realizes not only fast full-Stokes modulation but also wide coverage of the wavelength range, and therefore, a polarimeter with a highspeed rotating waveplate is most suitable for the simultaneous polarimetry observations at multi-wavelengths with a spectrograph. A comprehensive description of the instrument and some results of the solar spectropolarimetry with this polarimeter are given in this paper.

Citation Download Citation

Yoichiro Hanaoka "Polarimeter with a high-speed rotating waveplate for the solar observation", Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV, 844670 (24 September 2012); https://doi.org/10.1117/12.925304

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available