Design for birefringent filter with 8-channel for Space Solar Telescope

Details Design for birefringent filter with 8-channel for Space Solar Telescope Design for birefringent filter with 8-channel for Space Solar Telescope

Mar 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002pbeio..38..117j&link_type=abstract

Astrophysics Reports. Publications of the Beijing Astronomical Observatory, No. 38, p. 117 - 123 (2002). In: Proceedings of the

Astronomy and Astrophysics

Astrophysics

Birefringent Filters, Space Solar Telescope

Scientific paper

The principles of birefringent filter (BF) which consists of 8-channel and will be used in Space Solar Telescope (SST) is described in this article. The BF will be the main focus plane instrument of the payload of SST. It is a kind of birefringent filter with Polaroid replaced by polarizing beam splitter. It permits observations of solar vector magnetic field or line-of-sight velocity fields in any Fraunhofer line between the wavelength from 3900 to 6600 Å with half width from 0.03 to 0.12 Å. It can be turned across the spectral line to obtain line profiles of two-dimensional field of view with 8 channels. Because of this, we also call the BF with 8-channel as Two-Dimensional Spectrograph (TDS). This article also describes the analysis of mechanical and thermal control of the TDS. In the final, a new polarimeter of this system is introduced.

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