Spectropolarimetry with CRISP at the Swedish 1-m Solar Telescope

TL;DR

This paper introduces CRISP, a new spectropolarimeter at the Swedish 1-m Solar Telescope, offering high-resolution solar polarimetry data that complements space-based instruments like Hinode.

Contribution

The paper presents the capabilities and initial results of CRISP, a novel ground-based spectropolarimeter with superior spatial resolution for solar observations.

Findings

CRISP achieves 0.13" spatial resolution in solar spectropolarimetry.

Preliminary LTE inversion results of a pore with umbral dots are shown.

CRISP provides data comparable to Hinode but with higher spatial detail.

Abstract

CRISP (Crisp Imaging Spectro-polarimeter), the new spectropolarimeter at the Swedish 1-m Solar Telescope, opens a new perspective in solar polarimetry. With better spatial resolution (0.13") than Hinode in the Fe I 6302 A line and similar polarimetric sensitivity reached through postprocessing, CRISP complements the SP spectropolarimeter onboard Hinode. We present some of the data which we obtained in our June 2008 campaign and preliminary results from LTE inversions of a pore containing umbral dots.