Halo measurement using phase-sorting interferometry

Johanan L. Codona; Matthew Kenworthy; Michael Hart

Halo measurement using phase-sorting interferometry

Johanan L. Codona, Matthew Kenworthy, Michael Hart

Optical Sciences

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

Abstract

Imperfections, misalignments, aberrations, and even dust can significantly limit sensitivity in high-contrast imaging systems such as coronagraphs. An upstream deformable mirror (DM) can be used to correct or compensate for these flaws. To include non-common-path errors introduced after the an AO system closed loop, correcting measurements must be made with the science camera. Measurement of the phase and amplitude of a star's halo is sufficient to compute a compensating pupil DM shape that suppresses the scattered halo. Phase-Sorting Interferometry (PSI) is a technique that uses AO residual starlight speckles and wavefront sensor measurements to estimate the complex halo. We have demonstrated PSI on-sky at the 6.5m MMTO telescope using mid-IR L and M-band images.

Original language	English (US)
Title of host publication	Adaptive Optics
Subtitle of host publication	Methods, Analysis and Applications, AO 2011
State	Published - 2011
Event	Adaptive Optics: Methods, Analysis and Applications, AO 2011 - Toronto, Canada Duration: Jul 10 2011 → Jul 14 2011

Publication series

Name	Optics InfoBase Conference Papers
ISSN (Electronic)	2162-2701

Other

Other	Adaptive Optics: Methods, Analysis and Applications, AO 2011
Country/Territory	Canada
City	Toronto
Period	7/10/11 → 7/14/11

ASJC Scopus subject areas

Instrumentation
Atomic and Molecular Physics, and Optics

Cite this

@inproceedings{f78142afeec241259ccb13a49234d279,

title = "Halo measurement using phase-sorting interferometry",

abstract = "Imperfections, misalignments, aberrations, and even dust can significantly limit sensitivity in high-contrast imaging systems such as coronagraphs. An upstream deformable mirror (DM) can be used to correct or compensate for these flaws. To include non-common-path errors introduced after the an AO system closed loop, correcting measurements must be made with the science camera. Measurement of the phase and amplitude of a star's halo is sufficient to compute a compensating pupil DM shape that suppresses the scattered halo. Phase-Sorting Interferometry (PSI) is a technique that uses AO residual starlight speckles and wavefront sensor measurements to estimate the complex halo. We have demonstrated PSI on-sky at the 6.5m MMTO telescope using mid-IR L and M-band images.",

author = "Codona, {Johanan L.} and Matthew Kenworthy and Michael Hart",

year = "2011",

language = "English (US)",

isbn = "9781557529145",

series = "Optics InfoBase Conference Papers",

booktitle = "Adaptive Optics",

note = "Adaptive Optics: Methods, Analysis and Applications, AO 2011 ; Conference date: 10-07-2011 Through 14-07-2011",

}

TY - GEN

T1 - Halo measurement using phase-sorting interferometry

AU - Codona, Johanan L.

AU - Kenworthy, Matthew

AU - Hart, Michael

PY - 2011

Y1 - 2011

N2 - Imperfections, misalignments, aberrations, and even dust can significantly limit sensitivity in high-contrast imaging systems such as coronagraphs. An upstream deformable mirror (DM) can be used to correct or compensate for these flaws. To include non-common-path errors introduced after the an AO system closed loop, correcting measurements must be made with the science camera. Measurement of the phase and amplitude of a star's halo is sufficient to compute a compensating pupil DM shape that suppresses the scattered halo. Phase-Sorting Interferometry (PSI) is a technique that uses AO residual starlight speckles and wavefront sensor measurements to estimate the complex halo. We have demonstrated PSI on-sky at the 6.5m MMTO telescope using mid-IR L and M-band images.

AB - Imperfections, misalignments, aberrations, and even dust can significantly limit sensitivity in high-contrast imaging systems such as coronagraphs. An upstream deformable mirror (DM) can be used to correct or compensate for these flaws. To include non-common-path errors introduced after the an AO system closed loop, correcting measurements must be made with the science camera. Measurement of the phase and amplitude of a star's halo is sufficient to compute a compensating pupil DM shape that suppresses the scattered halo. Phase-Sorting Interferometry (PSI) is a technique that uses AO residual starlight speckles and wavefront sensor measurements to estimate the complex halo. We have demonstrated PSI on-sky at the 6.5m MMTO telescope using mid-IR L and M-band images.

UR - http://www.scopus.com/inward/record.url?scp=84894101192&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84894101192&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:84894101192

SN - 9781557529145

T3 - Optics InfoBase Conference Papers

BT - Adaptive Optics

T2 - Adaptive Optics: Methods, Analysis and Applications, AO 2011

Y2 - 10 July 2011 through 14 July 2011

ER -

Halo measurement using phase-sorting interferometry

Abstract

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ASJC Scopus subject areas

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