|
|||||
|
|
Polarization Calibration of the Solar Optical Telescope onboard Hinode |
|
| Authors: | K Ichimoto B Lites D Elmore Y Suematsu S Tsuneta Y Katsukawa T Shimizu R Shine T Tarbell A Title J Kiyohara K Shinoda G Card A Lecinski K Streander M Nakagiri M Miyashita M Noguchi C Hoffmann T Cruz |
| Institution: | 1. National Astronomical Observatory of Japan, 2-21-1, Osawa, Mitaka, Toyko, 181-8588, Japan 2. High Altitude Observatory, National Center for Atmospheric Research, P.O. Box 3000, Boulder, CO, 80307-3000, USA 4. Japan Aerospace Exploration Agency, Institute of Space and Astronautical Science, 3-1-1, Yoshinodai, Sagamihara, Kanagawa, 229-8510, Japan 3. Lockheed Martin Advanced Technology Center, 3251 Hanover Street, Palo Alto, CA, 94304, USA 5. Kwasan Observatory, Kyoto University, Kita-Kazan Ohmine-cho, Yamashina-ku, Kyoto, 607-8471, Japan |
| Abstract: | The Solar Optical Telescope (SOT) onboard Hinode aims to obtain vector magnetic fields on the Sun through precise spectropolarimetry of solar spectral lines with a spatial resolution of 0.2 – 0.3 arcsec. A photometric accuracy of 10−3 is achieved and, after the polarization calibration, any artificial polarization from crosstalk among Stokes parameters is required to be suppressed below the level of the statistical noise over the SOT’s field of view. This goal was achieved by the highly optimized design of the SOT as a polarimeter, extensive analyses and testing of optical elements, and an end-to-end calibration test of the entire system. In this paper we review both the approach adopted to realize the high-precision polarimeter of the SOT and its final polarization characteristics. |
| Keywords: | Polarimeter Stokes vector Space telescope Magnetic field Optical telescope Sun |
| 本文献已被 SpringerLink 等数据库收录！ | |