First Analysis of DL-NIRSP Integral Field Spectropolarimetry

Studying the dynamic interaction of the plasma and magnetic field in the lower solar atmosphere poses an observational challenge because simultaneous coverage of the spatial and spectral dimensions as well as polarization is required at high cadence. DKIST's Diffraction-Limited Near-Infrared Spectropolarimeter is a unique facility-class instrument that provides simultaneous multi-channel integral field spectropolarimetry of diverse diagnostics for studying both the corona and the lower solar atmosphere. Its integral field unit (IFU) allows for user-optimized creation of arbitrary rectangular mosaics up to a 2'x2' field of view. Narrow bandpasses around polarized diagnostic lines are recorded in three channels spanning 500 to 1800 nm. In this work, we demonstrate the capability of DL-NIRSP mosaics for on-disk observations taken during the science verification phase. This includes simultaneous observations of the Fe I 630.2 nm, Si I 1082.7 nm / He I 1083 nm, and Fe I 1565 nm spectral lines, which probe the photospheric opacity minimum as well as the upper chromosphere to address the multi-layer connectivity of the solar magnetic field.