29 citations · 60 across the 14 of their papers we have counts for
14 papers · 1 filter
Integrated coronagraphy and wavefront sensing with the PIAACMC
Sebastiaan Y. Haffert, Jared R. Males, Olivier Guyon
Uncorrected wavefront errors create speckle noise in high-contrast observations at small inner-working angles. These speckles can be sensed and controlled by using coronagraph inte…
The MAPS Adaptive Secondary Mirror: First Light, Laboratory Work, and Achievements
Jess A. Johnson, Amali Vaz, Manny Montoya +23
The MMT Adaptive Optics exoPlanet Characterization System (MAPS) is a comprehensive update to the first generation MMT adaptive optics system (MMTAO), designed to produce a facilit…
Implicit electric field Conjugation: Data-driven focal plane control
S. Y. Haffert, J. R. Males, K. Ahn +11
Direct imaging of Earth-like planets is one of the main science cases for the next generation of extremely large telescopes. This is very challenging due to the star-planet contras…
Experimental Trials With The Optical Differentiation Wavefront Sensor For Extended Objects
Meghan Farris O'Brien, Sebastiaan Y. Haffert, Joseph D. Long +4
Commonly used wavefront sensors, the Shack Hartmann wavefront sensor and the pyramid wavefront sensor, for example, have large dynamic range or high sensitivity, trading one regime…
High Contrast Imaging at the Photon Noise Limit with WFS-based PSF Calibration
Olivier Guyon, Barnaby Norris, Marc-Antoine Martinod +10
Speckle Noise is the dominant source of error in high contrast imaging with adaptive optics system. We discuss the potential for wavefront sensing telemetry to calibrate speckle no…
The space coronagraph optical bench (SCoOB): 2. wavefront sensing and control in a vacuum-compatible coronagraph testbed for spaceborne high-contrast imaging technology
Kyle Van Gorkom, Ewan S. Douglas, Jaren N. Ashcraft +9
The 2020 Decadal Survey on Astronomy and Astrophysics endorsed space-based high contrast imaging for the detection and characterization of habitable exoplanets as a key priority fo…
The Space Coronagraph Optical Bench (SCoOB): 1. Design and Assembly of a Vacuum-compatible Coronagraph Testbed for Spaceborne High-Contrast Imaging Technology
Jaren N. Ashcraft, Heejoo Choi, Ewan S. Douglas +14
The development of spaceborne coronagraphic technology is of paramount importance to the detection of habitable exoplanets in visible light. In space, coronagraphs are able to bypa…
High contrast imaging at the photon noise limit with self-calibrating WFS/C systems
Olivier Guyon, Barnaby Norris, Marc-Antoine Martinod +20
High contrast imaging (HCI) systems rely on active wavefront control (WFC) to deliver deep raw contrast in the focal plane, and on calibration techniques to further enhance contras…
SCExAO, a testbed for developing high-contrast imaging technologies for ELTs
Kyohoon Ahn, Olivier Guyon, Julien Lozi +21
To directly detect exoplanets and protoplanetary disks, the development of high accuracy wavefront sensing and control (WFS&C) technologies is essential, especially for ground-base…
The Three-Sided PyramidWavefront Sensor. I. Simulations and Analysis for Astronomical Adaptive Optics
Lauren Schatz, Jared R. Males, Carlos Correia +11
For ExAO instruments for the Giant Segmented Mirror Telescopes (GSMTs), alternative architectures of WFS are under consideration because there is a tradeoff between detector size,…
Pioneering high contrast science instruments for planet characterization on giant segmented mirror telescopes
N. Jovanovic, O. Guyon, J. Lozi +36
A suite of science instruments is critical to any high contrast imaging facility, as it defines the science capabilities and observing modes available. SCExAO uses a modular approa…
Developing post-coronagraphic, high-resolution spectroscopy for terrestrial planet characterization on ELTs
N. Jovanovic, O. Guyon, T. Kotani +12
Spectroscopic observations are extremely important for determining the composition, structure, and surface gravity of exoplanetary atmospheres. High resolution spectroscopy of 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…
How to Directly Image a Habitable Planet Around Alpha Centauri with a ~30-45cm Space Telescope
Ruslan Belikov, Eduardo Bendek, Sandrine Thomas +2
Several mission concepts are being studied to directly image planets around nearby stars. It is commonly thought that directly imaging a potentially habitable exoplanet around a Su…