A Visible-light Lyot Coronagraph for SCExAO/VAMPIRES

Miles Lucas; Michael Bottom; Olivier Guyon; Julien Lozi; Barnaby Norris; Vincent Deo; Sébastien Vievard; Kyohoon Ahn; Nour Skaf; Peter Tuthill

doi:10.1117/12.2632269

A Visible-light Lyot Coronagraph for SCExAO/VAMPIRES

Miles Lucas, Michael Bottom, Olivier Guyon, Julien Lozi, Barnaby Norris, Vincent Deo, Sébastien Vievard, Kyohoon Ahn, Nour Skaf, Peter Tuthill

Optical Sciences

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

9 Scopus citations

Abstract

We describe the design and initial results from a visible-light Lyot coronagraph for SCExAO/VAMPIRES. The coronagraph is comprised of four hard-edged, partially transmissive focal plane masks with inner working angles of 36 mas, 55 mas, 92 mas and 129 mas, respectively. The Lyot stop is a reflective, undersized design with a geometric throughput of 65.7%. Our preliminary on-sky contrast is 10⁻² at 0.1^′′ to 10⁻⁴ at 0.75^′′ for all mask sizes. The coronagraph was deployed in early 2022 and is available for open use.

Original language	English (US)
Title of host publication	Ground-based and Airborne Instrumentation for Astronomy IX
Editors	Christopher J. Evans, Julia J. Bryant, Kentaro Motohara
Publisher	SPIE
ISBN (Electronic)	9781510653498
DOIs	https://doi.org/10.1117/12.2632269
State	Published - 2022
Event	Ground-based and Airborne Instrumentation for Astronomy IX 2022 - Montreal, Canada Duration: Jul 17 2022 → Jul 22 2022

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	12184
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Ground-based and Airborne Instrumentation for Astronomy IX 2022
Country/Territory	Canada
City	Montreal
Period	7/17/22 → 7/22/22

Keywords

Coronagraph
Exoplanets
High-Contrast Imaging
Optical

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.2632269

Cite this

Lucas, M., Bottom, M., Guyon, O., Lozi, J., Norris, B., Deo, V., Vievard, S., Ahn, K., Skaf, N., & Tuthill, P. (2022). A Visible-light Lyot Coronagraph for SCExAO/VAMPIRES. In C. J. Evans, J. J. Bryant, & K. Motohara (Eds.), Ground-based and Airborne Instrumentation for Astronomy IX Article 121844E (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12184). SPIE. https://doi.org/10.1117/12.2632269

A Visible-light Lyot Coronagraph for SCExAO/VAMPIRES. / Lucas, Miles; Bottom, Michael; Guyon, Olivier et al.
Ground-based and Airborne Instrumentation for Astronomy IX. ed. / Christopher J. Evans; Julia J. Bryant; Kentaro Motohara. SPIE, 2022. 121844E (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12184).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Lucas, M, Bottom, M, Guyon, O, Lozi, J, Norris, B, Deo, V, Vievard, S, Ahn, K, Skaf, N & Tuthill, P 2022, A Visible-light Lyot Coronagraph for SCExAO/VAMPIRES. in CJ Evans, JJ Bryant & K Motohara (eds), Ground-based and Airborne Instrumentation for Astronomy IX., 121844E, Proceedings of SPIE - The International Society for Optical Engineering, vol. 12184, SPIE, Ground-based and Airborne Instrumentation for Astronomy IX 2022, Montreal, Canada, 7/17/22. https://doi.org/10.1117/12.2632269

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abstract = "We describe the design and initial results from a visible-light Lyot coronagraph for SCExAO/VAMPIRES. The coronagraph is comprised of four hard-edged, partially transmissive focal plane masks with inner working angles of 36 mas, 55 mas, 92 mas and 129 mas, respectively. The Lyot stop is a reflective, undersized design with a geometric throughput of 65.7\%. Our preliminary on-sky contrast is 10−2 at 0.1′′ to 10−4 at 0.75′′ for all mask sizes. The coronagraph was deployed in early 2022 and is available for open use.",

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AU - Guyon, Olivier

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AU - Deo, Vincent

AU - Vievard, Sébastien

AU - Ahn, Kyohoon

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N2 - We describe the design and initial results from a visible-light Lyot coronagraph for SCExAO/VAMPIRES. The coronagraph is comprised of four hard-edged, partially transmissive focal plane masks with inner working angles of 36 mas, 55 mas, 92 mas and 129 mas, respectively. The Lyot stop is a reflective, undersized design with a geometric throughput of 65.7%. Our preliminary on-sky contrast is 10−2 at 0.1′′ to 10−4 at 0.75′′ for all mask sizes. The coronagraph was deployed in early 2022 and is available for open use.

AB - We describe the design and initial results from a visible-light Lyot coronagraph for SCExAO/VAMPIRES. The coronagraph is comprised of four hard-edged, partially transmissive focal plane masks with inner working angles of 36 mas, 55 mas, 92 mas and 129 mas, respectively. The Lyot stop is a reflective, undersized design with a geometric throughput of 65.7%. Our preliminary on-sky contrast is 10−2 at 0.1′′ to 10−4 at 0.75′′ for all mask sizes. The coronagraph was deployed in early 2022 and is available for open use.

KW - Coronagraph

KW - Exoplanets

KW - High-Contrast Imaging

KW - Optical

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A Visible-light Lyot Coronagraph for SCExAO/VAMPIRES

Abstract

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Keywords

ASJC Scopus subject areas

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