168 citations · 696 across the 37 of their papers we have counts for
33 papers · 1 filter
Optical Design Pathways to Fluidic Space-Assembled Reflectors & Dual-Configuration Spectrographs for Characterizing Exo-Earths
Enrico Biancalani, Edward Balaban, Ruslan Belikov +14
| We present a conceptual framework for optically designing space-assembled telescopes whose primary mirror is formed via the enabl…
Nancy Grace Roman Space Telescope Coronagraph Instrument Overview and Status
Vanessa P. Bailey, Eduardo Bendek, Brian Monacelli +19
The Nancy Grace Roman Space Telescope Coronagraph Instrument is a critical technology demonstrator for NASA's Habitable Worlds Observatory. With a predicted visible-light flux rati…
Random Vibration Testing of Microelectromechanical Deformable Mirrors for Space-based High-Contrast Imaging
Axel Potier, Camilo Mejia Prada, Garreth Ruane +11
Space-based stellar coronagraph instruments aim to directly image exoplanets that are a fraction of an arcsecond separation and ten billion times fainter than their host star. To a…
Flight mask designs of the Roman Space Telescope Coronagraph Instrument
A J Eldorado Riggs, Dwight Moody, Jessica Gersh-Range +17
Over the past two decades, thousands of confirmed exoplanets have been detected; the next major challenge is to characterize these other worlds and their stellar systems. Much info…
Experimental analysis of the achromatic performance of a vector vortex coronagraph
Garreth Ruane, Eugene Serabyn, Camilo Mejia Prada +4
The vector vortex coronagraph is an instrument designed for direct detection and spectroscopy of exoplanets over a broad spectral range. Our team is working towards demonstrating c…
Microelectromechanical deformable mirror development for high-contrast imaging, part 1: miniaturized, flight-capable control electronics
Eduardo Bendek, Garreth Ruane, Camilo Mejia Prada +3
Deformable mirrors (DMs) are a critical technology to enable coronagraphic direct imaging of exoplanets with current and planned ground - and space-based telescopes as well as futu…
Wavefront sensing and control in space-based coronagraph instruments using Zernike's phase-contrast method
Garreth Ruane, J. Kent Wallace, John Steeves +14
Future space telescopes with coronagraph instruments will use a wavefront sensor (WFS) to measure and correct for phase errors and stabilize the stellar intensity in high-contrast…
Microelectromechanical deformable mirror development for high-contrast imaging, part 2: the impact of quantization errors on coronagraph image contrast
Garreth Ruane, Daniel Echeverri, Eduardo Bendek +8
Stellar coronagraphs rely on deformable mirrors (DMs) to correct wavefront errors and create high contrast images. Imperfect control of the DM limits the achievable contrast and, t…
The Habitable Exoplanet Observatory (HabEx) Mission Concept Study Final Report
B. Scott Gaudi, Sara Seager, Bertrand Mennesson +183
The Habitable Exoplanet Observatory, or HabEx, has been designed to be the Great Observatory of the 2030s. For the first time in human history, technologies have matured sufficient…
Searching for Planets Orbiting Alpha Centauri A with the James Webb Space Telescope
Charles Beichman, Marie Ygouf, Jorge Llop Sayson +18
Alpha Centauri A is the closest solar-type star to the Sun and offers an excellent opportunity to detect the thermal emission of a mature planet heated by its host star. The MIRI c…
All-Sky Near Infrared Space Astrometry
Barbara McArthur, David Hobbs, Erik Høg +20
Gaia is currently revolutionizing modern astronomy. However, much of the Galactic plane, center and the spiral arm regions are obscured by interstellar extinction, rendering them i…
Review of high-contrast imaging systems for current and future ground-based and space-based telescopes III. Technology opportunities and pathways
Frans Snik, Olivier Absil, Pierre Baudoz +30
The Optimal Optical CoronagraphWorkshop at the Lorentz Center in September 2017 in Leiden, the Netherlands gathered a diverse group of 25 researchers working on exoplanet instrumen…
TDEM final report: Enhanced direct imaging exoplanet detection with astrometry mass determination
Eduardo Bendek, Ruslan Belikov, Olivier Guyon +6
This Final Report (FR) presents the results of the Enhanced direct imaging exoplanet detection with astrometry mass determination project, which was executed in support of NASA's E…
Using Ground-Based Telescopes to Mature Key Technologies and Advance Science for Future NASA Exoplanet Direct Imaging Missions
Thayne Currie, Ruslan Belikov, Olivier Guyon +8
Ground-based telescopes have been playing a leading role in exoplanet direct imaging science and technological development for the past two decades and will continue to have an ind…
Project Blue: Visible Light Imaging Search for Terrestrial-class Exoplanets in the Habitable Zones of Alpha Centauri A and B
Jon Morse, Eduardo Bendek, Nathalie Cabrol +9
Project Blue is designed to deliver a small coronagraphic space telescope mission to low-Earth orbit capable of detecting an Earth-like planet in the habitable zones of the Sun-lik…
The value of astrometry for exoplanet science
Eduardo Bendek, Mark Marley, Michael Shao +3
Exoplanets mass measurements will be a critical next step to assess the habitability of Earth-like planets: a key aspect of the 2020 vision in the previous decadal survey and also…
Precision Space Astrometry as a Tool to Find Earth-like Exoplanets
Michael Shao, Slava G. Turyshev, Eduardo Bendek +6
Because of the recent technological advances, the key technologies needed for precision space optical astrometry are now in hand. The Microarcsecond Astrometry Probe (MAP) mission…
Demonstration of broadband contrast at 1.2 /D and greater for the EXCEDE Starlight Suppression System
Dan Sirbu, Sandrine J. Thomas, Ruslan Belikov +8
The EXoplanetary Circumstellar Environments and Disk Explorer (EXCEDE) science mission concept uses a visible-wavelength Phase-Induced Amplitude Apodization (PIAA) coronagraph to e…
Wavefront retrieval through random pupil plane phase probes: Gerchberg-Saxton approach
Eugene Pluzhnik, Dan Sirbu, Ruslan Belikov +2
A pupil plane wavefront reconstruction procedure is proposed based on analysis of a sequence of focal plane images corresponding to a sequence of random pupil plane phase probes. T…
Prospects for exoplanet imaging in multi-star systems with starshades
Dan Sirbu, Ruslan Belikov, Eduardo Bendek +3
We explore the capabilities of a starshade mission to directly image multi-star systems. In addition to the diffracted and scattered light for the on-axis star, a multi-star system…
Techniques for High-Contrast Imaging in Multi-Star Systems II: Multi-Star Wavefront Control
Dan Sirbu, Sandrine Thomas, Ruslan Belikov +1
Direct imaging of exoplanets represents a challenge for astronomical instrumentation due to the high-contrast ratio and small angular separation between the host star and the faint…
Development of a Miniaturized Deformable Mirror Controller
Eduardo Bendek, Dana Lynch, Eugene Pluzhnik +4
High-Performance Adaptive Optics systems are rapidly spreading as useful applications in the fields of astronomy, ophthalmology, and telecommunications. This technology is critical…
A method to directly image exoplanets in multi-star systems such as Alpha-Centauri
Sandrine J. Thomas, Ruslan Belikov, Eduardo Bendek
Direct imaging of extra-solar planets is now a reality, especially with the deployment and commissioning of the first generation of specialized ground-based instruments such as the…
Space telescope design to directly image the habitable zone of Alpha Centauri
Eduardo Bendek, Ruslan Belikov, Julien Lozi +4
The scientific interest in directly image and identifying Earth-like planets within the Habitable Zone (HZ) around nearby stars is driving the design of specialized direct imaging…