5 papers
Joint Diagnostics of Circumsolar Sky Brightness Using Coronagraphic Measurements and Aerosol Optical Inversions at Mauna Loa
Thomas A. Schad, Paul Bryans, Andre Fehlmann +5
Atmospheric aerosols strongly influence daytime sky quality for solar coronal imaging, yet few studies directly link aerosol properties and sky-brightness measurements within ~2°…
On the modeling and mitigation of interference fringes in polarimetric instrumentation
Roberto Casini, David M. Harrington
Spectral and spatial fringes in polarized light are produced by the interference of transmitted and reflected waves at the interface between materials with different indexes of ref…
Observational insights into Sr I 4607 Ã scattering polarization with DKIST/ViSP
Franziska Zeuner, Ernest Alsina Ballester, Luca Belluzzi +4
Scattering polarization signals in the Sr I 4607 Ã spectral line are among the strongest originating from the solar photosphere, offering a powerful diagnostic of tangled magnetic…
Optimal polarization modulation and calibration schemes
Roberto Casini, David M. Harrington, Alfred G. de Wijn
We review the algebraic definition of the efficiency of a polarization modulation scheme, which is commonly adopted for solar and stellar spectro-polarimetry applications, and gene…
DKIST resolves sub-arcsec photospheric scattering polarization
Franziska Zeuner, Luca Belluzzi, Ernest Alsina Ballester +4
Scattering polarization signals offer a unique diagnostics of the physical conditions in the solar atmosphere, in particular magnetic fields via the Hanle effect. However, their sp…