![(Left) The aperture assumed in these simulations. Furthermore, the stellar radius is assumed to be 0.03 λ/D, and the planet is assumed to be at 1 λ/D in the positive X direction. Middle) The single-moded measurement shown in the pupil plane (top) and focal plane (bottom) obtained by using the highest information mode from the calculation of the SLD, denoted here as SLD Mode 0. Right) The single-moded measurement shown in the pupil and focal planes as calculated using a classical numerical optimization. Pupil plane extents are from -0.5 to 0.5 (with an aperture diameter normalized to 1), while focal plane extents are from -5 λ/D to 5λ/D. Both of these methods are described in Ref. 13, and achieve ηs ≈ 1 × 10−9 , with ηp at 1 λ/D of approximately 19%, and a maximum ηp of 73% at 1.8 λ/D. -- [astro-ph.IM]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/07/Optimal-mode-sorting.png?resize=1200%2C717&ssl=1)
[astro-ph.IM] Conventional coronagraph architectures struggle to reach the theoretical limit of exoplanet detection at close working angles. Spatial mode-sorting is capable of reaching the theoretical limit, which previous work has […]
coronagraphy
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Press Release, Proxima Centauri, Saturn, tau Ceti, Uranus
On the Detection Of Exorings in Reflected Light With JWST NIRCam
When directly imaging a cold giant exoplanet hosting a ring system, the reflected light from the rings can outshine the planet’s thermal emission and reflected-light in the near-infrared.
Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report
Bioverse: Assessing the Ability of Direct Imaging Surveys to Empirically Constrain the Habitable Zone via Trends in Albedo
Will future direct imaging missions such as NASA’s upcoming Habitable Worlds Observatory (HWO) be able to understand Earth-sized planets as a population?
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Gas Giants, Imaging & Spectroscopy, Jupiter, Saturn, Status Report
JWST MIRI Imaging Can Directly Detect Exoplanets Of The Same Temperature, Mass, Age, And Orbital Separation As Saturn And Jupiter
NIRCam and MIRI coronagraphy have successfully demonstrated the ability to directly image young sub-Jupiter mass and mature gas-giant exoplanets.
Posted inAI - Data - Apps - Cybernetics, Astronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
MODEL&CO: Exoplanet Detection In Angular Differential Imaging By Learning Across Multiple Observations
Direct imaging of exoplanets is particularly challenging due to the high contrast between the planet and the star luminosities, and their small angular separation. In addition to tailored instrumental facilities […]
Posted inAstronomy & Telescopes, Epsilon Eridani, Exoplanets, -moons, -comets, Status Report
SPHERE RefPlanets: Search For Epsilon Eridani b And Warm Dust
We carried out very deep VLT/SPHERE imaging polarimetry of the nearby system Eps Eri based on 38.5 hours of integration time with a 600 – 900 nm broadband filter to […]