Instrument and data analysis challenges for imaging spectropolarimetry

TL;DR

This paper discusses the challenges in instrument design and data analysis for high-resolution solar imaging spectropolarimetry, emphasizing the need for advanced techniques to handle small-scale structures observed with next-generation telescopes.

Contribution

It highlights the specific instrument and data analysis challenges anticipated for future solar telescopes like GFPI, illustrating the complexities involved in high-resolution solar observations.

Findings

Identification of key instrument challenges for high-resolution solar imaging.

Analysis of data processing complexities for small-scale solar structures.

Discussion of adaptive optics and image restoration techniques.

Abstract

The next generation of solar telescopes will enable us to resolve the fundamental scales of the solar atmosphere, i.e., the pressure scale height and the photon mean free path. High-resolution observations of small-scale structures with sizes down to 50 km require complex post-focus instruments, which employ adaptive optics (AO) and benefit from advanced image restoration techniques. The GREGOR Fabry-Perot Interferometer (GFPI) will serve as an example of such an instrument to illustrate the challenges that are to be expected in instrumentation and data analysis with the next generation of solar telescopes.