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On-Sky Speckle Nulling Demonstration at Small Angular Separation with SCExAO

Martinache, Frantz and Guyon, Olivier and Jovanovic, Nemanja and Clergeon, Christophe and Singh, Garima and Kudo, Tomoyuki and Currie, Thayne and Thalmann, Christian and McElwain, Michael and Tamura, Motohide (2014) On-Sky Speckle Nulling Demonstration at Small Angular Separation with SCExAO. Publications of the Astronomical Society of the Pacific, 126 (940). pp. 565-572. ISSN 0004-6280.

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This paper presents the first on-sky demonstration of speckle nulling, which was achieved at the Subaru Telescope in the context of the Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) Project. Despite the absence of a high-order high-bandwidth closed-loop AO system, observations conducted with SCExAO show that even in poor-to-moderate observing conditions, speckle nulling can be used to suppress static and slow speckles even in the presence of a brighter dynamic speckle halo, suggesting that more advanced high-contrast imaging algorithms developed in the laboratory can be applied to ground-based systems.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Martinache, Frantz0000-0003-1180-4138
Guyon, Olivier0000-0002-1097-9908
Currie, Thayne0000-0002-7405-3119
Tamura, Motohide0000-0002-6510-0681
Additional Information:© 2014 The Astronomical Society of the Pacific. Received 2013 September 16; accepted 2014 May 04; published 2014 June 11.
Issue or Number:940
Record Number:CaltechAUTHORS:20190415-161116590
Persistent URL:
Official Citation:Frantz Martinache et al 2014 PASP 126 565
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:94724
Deposited By: Tony Diaz
Deposited On:16 Apr 2019 23:41
Last Modified:03 Oct 2019 21:06

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