Soummer, Rémi and Laginja, Iva and Will, Scott D. and Juanola-Parramon, Roser and Petrone, Peter and Brady, Gregory R. and Noss, James and Perrin, Marshall D. and Fowler, Julia and Kurtz, Heather and St. Laurent, Kathryn and Fogarty, Kevin and McChesney, Evelyn and Scott, Nathan and Brooks, Keira and Comeau, Thomas and Ferrari, Marc and Gontrum, Rob and Hagopian, John and Hugot, Emmanuel and Leboulleux, Lucie and Mazoyer, Johan and Mugnier, Laurent and N'Diaye, Mamadou and Pueyo, Laurent and Sauvage, Jean-François and Shiri, Ron and Sivaramakrishnan, Anand and Valenzuela, Ana-Maria and Zimmerman, Neil T. (2019) High-contrast imager for complex aperture telescopes (HiCAT): 6. Two deformable mirror wavefront control (Conference Presentation). In: Techniques and Instrumentation for Detection of Exoplanets IX. Proceedings of SPIE. No.11117. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 111171Y. ISBN 9781510629271. https://resolver.caltech.edu/CaltechAUTHORS:20190912-105111393
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Abstract
The goal of the High-contrast imager for Complex Aperture Telescopes (HiCAT) testbed is to demonstrate coronagraphic starlight suppression solutions for future segmented aperture space telescopes such as the Large UV, Optical, IR telescope (LUVOIR) mission concept being studied by NASA. The testbed design has the flexibility to enable studies with increasing complexity for telescope aperture geometries starting with off-axis telescopes, then on-axis telescopes with central obstruction and support structures. The testbed implements the Apodized Pupil Lyot Coronagraph (APLC) optimized for the HiCAT aperture, which is similar to one of the possible geometries considered for LUVOIR. Wavefront can be controlled using continuous deformable mirrors, and wavefront sensing is performed using the imaging camera, or a dedicated phase retrieval camera, and also in a low-order wavefront sensing arm. We present a progress update of the testbed in particular results using two deformable mirror control to produce high-contrast dark zone, and preliminary results using the testbed’s low order Zernike wavefront sensor.
| Item Type: | Book Section | ||||||
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| Additional Information: | © 2019 Society of Photo-Optical Instrumentation Engineers (SPIE). | ||||||
| Series Name: | Proceedings of SPIE | ||||||
| Issue or Number: | 11117 | ||||||
| DOI: | 10.1117/12.2530299 | ||||||
| Record Number: | CaltechAUTHORS:20190912-105111393 | ||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20190912-105111393 | ||||||
| Official Citation: | Rémi Soummer, Iva Laginja, Scott Will, Roser Juanola-Parramon, Peter Petrone III, Greg Brady, James Noss, Marshall D. Perrin, Julia Fowler, Heather Kurtz, Kathryn St. Laurent, Kevin Fogarty, Evelyn McChesney, Nathan Scott, Keira Brooks, Thomas Comeau, Marc Ferrari, Rob Gontrum, John Hagopian, Emmanuel Hugot, Lucie Leboulleux, Johan Mazoyer, Laurent Mugnier, Mamadou N'Diaye, Laurent Pueyo, Jean-François Sauvage, Ron Shiri, Anand Sivaramakrishnan, Ana-Maria Valenzuela, and Neil T. Zimmerman "High-contrast imager for complex aperture telescopes (HiCAT): 6. Two deformable mirror wavefront control (Conference Presentation)", Proc. SPIE 11117, Techniques and Instrumentation for Detection of Exoplanets IX, 111171Y (9 September 2019); https://doi.org/10.1117/12.2530299 | ||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||
| ID Code: | 98608 | ||||||
| Collection: | CaltechAUTHORS | ||||||
| Deposited By: | Tony Diaz | ||||||
| Deposited On: | 12 Sep 2019 18:30 | ||||||
| Last Modified: | 16 Nov 2021 17:40 |
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