Back to Volume
Paper: On Zeeman Diagnostics with a 4 m Aperture
Volume: 463, 2nd ATST-EAST Workshop in Solar Physics: Magnetic Fields from the Photosphere to the Corona
Page: 337
Authors: Kim, I. S.; Alexeeva, I. V.; Suyunova, E. Z.
Abstract: “Weak” magnetic field diagnostics in faint structures (prominences, chromosphere, and corona) near the bright solar disk are discussed. The reliable V-profile recording is shown to strongly depend on the level of stray light. Calculated dependencies of the stray light caused by diffraction at the entrance aperture are presented for several diameters and wavelengths. The acceptable level of stray light in a 4 m aperture coronagraph is estimated for a “signal-to-noise” ratio > 3, when using Hα and Fe XIII 1074.7 nm lines, a super-smooth primary optics, and a perfect polarimeter.
Back to Volume