Fig. 1
From: Optical design of the multi-wavelength imaging coronagraph Metis for the solar orbiter mission
Schematic views of Metis coronagraph ray-tracings: a) UV channel; b) VL channel. In a) the optical path of coronal light is shown; in b) also the optical path of the light from a sun disk edge back rejected by M0 is shown. IEO: inverted external occulter; M0, M1 and M2 are the mirrors along the Metis optical path; LS: Lyot Stop; IO: Internal Occulter; FS: Field Stop; IF: Interference Filter; UV/VL FP: UltraViolet / Visible Light Focal Plane; CD: Collimating Doublet; BP: Band Pass filter; QW: Quarter Wave plate; PMP: Polarization Module Package; LP: Linear Polarizer; FLS: Focusing Lens System