1 to 8 of 8 Results
Aug 2, 2021
Baxter, Wesley; Potier, Axel; Ruane, Garreth; Mejia-Prada, Camilo, 2021, "Design and Commissioning of an In-Air Coronagraph Testbed in the HCIT facility at NASA’s Jet Propulsion Laboratory", https://hdl.handle.net/2014/55213, SPIE OP21, San Diego, California, August 2-5, 2021, JPL Open Repository
After completing its duty in the vacuum chamber at the High Contrast Imaging Testbed (HCIT) facility at NASA’s Jet Propulsion Laboratory, the General Purpose Coronagraph Testbed (GPCT) has been retrofitted as the In-Air Coronagraph Testbed (IACT), with the purpose of verification... |
Aug 1, 2021
Prada, Camilo M.; Liu, Duncan; Ruane, Garreth; Tang, Hong; Potier, Axel; Bierden, Paul; Lam, Charlie, 2021, "Exep: Environmental Testing of High-Actuator-Count Mems Deformable Mirrors for Space-Based Applications", https://hdl.handle.net/2014/55222, SPIE Optics and Photonics 2021, San Diego, California, August 1-5, 2021, JPL Open Repository
Coronagraph instruments on future space telescopes will rely on deformable mirrors to create high contrast images for the direct detection of exoplanets. As part of the NASA Exoplanet Explorations Program’s coronagraph technology development efforts, two sets of Micro-electro-mec... |
Aug 1, 2021
Riggs, A. J. Eldorado; Ruane, Garreth; Sirbu, Dan; Belikov, Ruslan; Bendek, Eduardo, 2021, "ExEP: Initial super-Nyquist wavefront control experiments in the Decadal Survey Testbed", https://hdl.handle.net/2014/55244, SPIE Optics and Photonics 2021(In-Person/Virtual Hybrid), San Diego, California, August 1-5, 2021, JPL Open Repository
In order to characterize exoplanets around nearby stars, upcoming and proposed space telescopes are being designed with high contrast coronagraph instruments. Coronagraphs are generally designed to suppress only a single, on-axis star, but there are numerous binary star systems w... |
Aug 1, 2021
Poon, Phillip K.; Riggs, A J Eldorado; Ruane, Garreth; Bendek, Eduardo; Mejia-Prada, Camilo; Noyes, Matthew; Fregoso, Santos; Dean L. Palmer, 2021, "Deriving Deformable Mirror Performance Requirements in Simulation with Experimental Verification", https://hdl.handle.net/2014/55232, SPIE Optics and Photonics 2021, San Diego, California, August 1-5, 2021, JPL Open Repository
Coronagraph instruments rely on predictable and stable deformable mirror (DM) surface displacement to achieve the contrast required to detect Earth-sized exoplanets orbiting nearby Solar-type stars. Anomalous DM behavior, such as unstable or pinned actuators, can limit contrast i... |
Aug 1, 2021
Bendek, Eduardo; Belilok, Ruslan; Sirbu, Dan; Riggs, A.J. Eldorado; Ruane, Garreth; Pluzhnik, Eugene; Balasubramanian, Bala; Prada, Camilo Mejia, 2021, "Enabling High-Contrast Imaging of Binary Stars With the Roman Space Telescope Coronagraph Instrument", https://hdl.handle.net/2014/55203, SPIE Optics and Photonics 2021, San Diego, California, August 1-5, 2021, JPL Open Repository
A large fraction of Sun-like stars is contained in binary systems, in fact within 10 pc there are 67 FGK stars, out of which 42 belong to a multi-star system, and 28 have companion leak that is greater than 1e-9 contrast, assuming typical Hubble-quality space optics. Currently, t... |
Aug 1, 2021
Riggs, A.J. Eldorado; Moodya, Dwight; Gersh-Rangeb, Jessica; Sirbu, Dan; Belikovc, Ruslan; Bendeka, Eduardo; Baileya, Vanessa P.; Balasubramanian, Kunjithapatham; Wilson, Daniel W.; Basinger, Scott A.; Debes, John; Groff, Tyler D.; Kasdin, Jeremy N.; Mennesson, Bertrand; Moore, Douglas M.; Ruane, Garreth; Sidick, Erkin; Siegler, Nicholas; Trauger, John; Zimmerman, Neil T., 2021, "Flight mask designs of the Roman Space Telescope Coronagraph Instrument", https://hdl.handle.net/2014/55206, SPIE Optics and Photonics 2021, San Diego, California, August 1-5, 2021, JPL Open Repository
Over the past two decades, thousands of con?rmed exoplanets have been detected; the next major challenge is to characterize these other worlds and their stellar systems. Much information on the composition and formation of exoplanets and circumstellar debris disks can only be ach... |
Aug 1, 2021
Potier, Axel; Ruane, Garreth; Chen, Pin; Chopra, Ankur; Dewell, Larry; Juanola-Parramon, Roser; Nordt, Alison; Pueyo, Laurent; Redding, David; Riggs, A.J. Eldorado; Sirbu, Dan, 2021, "LUVOIR-ECLIPS Closed-Loop Adaptive Optics Performance and Contrast Predictions", https://hdl.handle.net/2014/55201, SPIE Optics and Photonics 2021, San Diego, California, August 1-5, 2021, JPL Open Repository
One of the primary science goals of the Large UV/Optical/Infrared Surveyor (LUVOIR) mission concept is to detect and characterize Earth-like exoplanets orbiting nearby stars with direct imaging. The success of its coronagraph instrument ECLIPS (Extreme Coronagraph for Living Plan... |
Aug 1, 2021
Meeker, Seth R.; Noyes, Matthew; Tang, Hong; Ruane, Garreth; Prada, Camilo Mejia; Bendek, Eduardo; Baxter, Wesley; Crill, Brendan; Riggs, A.J. Eldorado; Poon, Phillip K.; Siegler, Nick, 2021, "The Twin Decadal Survey Testbeds in the High Contrast Imaging Testbed facility at NASA’s Jet Propulsion Laboratory", https://hdl.handle.net/2014/55209, SPIE Optics and Photonics 2021, San Diego, California, August 1-5, 2021, JPL Open Repository
Direct imaging of an Earth-like exoplanet will require future missions, such as the proposed HabEx or LUVOIR concepts, to achieve starlight suppression with planet/star contrast ratios on the order of 10−10 at angular separations <100 milliarcseconds in visible wavelengths. To fa... |
