[astro-ph.IM] Direct imaging and characterization of Earth-like planets require ultra-stable wavefronts to achieve a starlight suppression level of 100 parts per trillion (ppt) in the coronagraphic dark region of the […]
![Top: Hexagonal segmented primary mirror designs with no central obscuration with different number of rings and varying segment sizes (flat-to-flat (m) 1-Hex: 2.64, 2-Hex: 1.45, 3-Hex: 1.19, 4-Hex: 0.85, 5-Hex: 0.66), all designs have an inscribed diameter of ∼6 m. Middle: Binary apodizer masks optimized for their respective aperture design. Bottom: Respective coronagraphic PSFs with an annular dark hole ranging from 3.4λ/D - 12λ/D, and a spatial average contrast floor of ∼4 × 10−11 inside the dark hole. -- [astro-ph.IM]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/08/Segmentlevel.png?resize=1200%2C720&ssl=1)
[astro-ph.IM] Direct imaging and characterization of Earth-like planets require ultra-stable wavefronts to achieve a starlight suppression level of 100 parts per trillion (ppt) in the coronagraphic dark region of the […]