On-Sky Speckle Nulling Demonstration at Small Angular Separation with SCExAO
Abstract
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.
- Publication:
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Publications of the Astronomical Society of the Pacific
- Pub Date:
- June 2014
- DOI:
- 10.1086/677141
- arXiv:
- arXiv:1405.0824
- Bibcode:
- 2014PASP..126..565M
- Keywords:
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- Astrophysics - Instrumentation and Methods for Astrophysics
- E-Print:
- 5 figures, accepted for publication by PASP