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http://hdl.handle.net/20.500.12386/28311
Title: | Adaptive optics with an infrared pyramid wavefront sensor | Authors: | Bond, Charlotte Z. Wizinowich, Peter Chun, Mark Mawet, Dimitri Lilley, Scott Cetre, Sylvain Jovanovic, Nemanja Delorme, Jacques-Robert Wetherell, Edward Jacobson, Shane Lockhart, Charles Warmbier, Eric Wallace, James K. Hall, Donald N. Goebel, Sean Guyon, Olivier Plantet, Cedric AGAPITO, GUIDO Giordano, Christophe ESPOSITO, Simone Femenia-Castella, Bruno |
Issue Date: | 2018 | Volume: | Adaptive Optics Systems VI | Editors: | Close, Laird M.; Schreiber, Laura; Schmidt, Dirk | Series: | PROCEEDINGS OF SPIE | Number: | 10703 | First Page: | 107031Z | Abstract: | Wavefront sensing in the infrared is highly desirable for the study of M-type stars and cool red objects, as they are sufficiently bright in the infrared to be used as the adaptive optics guide star. This aids in high contrast imaging, particularly for low mass stars where the star-to-planet brightness ratio is reduced. Here we discuss the combination of infrared detector technology with the highly sensitive Pyramid wavefront sensor (WFS) for a new generation of systems. Such sensors can extend the capabilities of current telescopes and meet the requirements for future instruments, such as those proposed for the giant segmented mirror telescopes. Here we introduce the infrared Pyramid WFS and discuss the advantages and challenges of this sensor. We present a new infrared Pyramid WFS for Keck, a key sub-system of the Keck Planet Imager and Characterizer (KPIC). The design, integration and testing is reported on, with a focus on the characterization of the SAPHIRA detector used to provide the H-band wavefront sensing. Initial results demonstrate a required effective read noise <1e<SUP>-</SUP> at high gain. | Conference Name: | Adaptive Optics Systems VI | Conference Place: | Austin, Texas, United States | Conference Date: | 10-15 June, 2018 | URI: | http://hdl.handle.net/20.500.12386/28311 | URL: | https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10703/2314121/Adaptive-optics-with-an-infrared-Pyramid-wavefront-sensor/10.1117/12.2314121.short?SSO=1 | ISSN: | 0277-786X | ISBN: | 9781510619593 9781510619609 |
DOI: | 10.1117/12.2314121 | Bibcode ADS: | 2018SPIE10703E..1ZB | Fulltext: | open |
Appears in Collections: | 3.01 Contributi in Atti di convegno |
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[C54] Bond (2018).pdf | Pdf editoriale | 3.62 MB | Adobe PDF | View/Open |
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