Membrane mirror evaluation of APERTURE: A precise extremely large reflective telescope using re-configurable elements

Turgut B. Baturalp; Victoria L. Coverstone; Rocco Coppejans; Jian Cao; Yipwah Chung; David B. Buchholz; M. P. Ulmer

doi:10.1117/12.2309826

Membrane mirror evaluation of APERTURE: A precise extremely large reflective telescope using re-configurable elements

Turgut B. Baturalp^*, Victoria L. Coverstone, Rocco Coppejans, Jian Cao, Yipwah Chung, David B. Buchholz, M. P. Ulmer

^*Corresponding author for this work

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

Abstract

Larger mirrors are needed to satisfy the requirements of the next generation of UV-Vis space telescopes. Our NASA-NIAC funded project, titled A Precise Extremely large Reflective Telescope Using Reconfigurable Elements (APERTURE), attempts to meet this requirement. The aim of the project is to demonstrate technology that would deploy a large, continuous, high figure accuracy membrane mirror. The figure of the membrane mirror is corrected after deployment using a contiguous coating of a Magnetic Smart Material (MSM) and a magnetic field. The MSM is a magnetostrictive material which is driven by magnetic write head(s) (MWH), locally imposed on the non-reflective side of the membrane mirror. In this proceeding we report the figure accuracy of the MSM coated membrane mirror under various conditions using a Shack-Hartmann surface profiler. The figure accuracy and magnetostrictive performance of the membrane mirror is found to be significantly dependent on ambient temperature fluctuations, the tension load on the membrane, time, magnetic writing head orientation and magnetic field strength. The results and reproducibility of the surface profiling experiments under various conditions are introduced and discussed.

Original language	English (US)
Title of host publication	Space Telescopes and Instrumentation 2018
Subtitle of host publication	Optical, Infrared, and Millimeter Wave
Editors	Giovanni G. Fazio, Howard A. MacEwen, Makenzie Lystrup
Publisher	SPIE
ISBN (Print)	9781510619494
DOIs	https://doi.org/10.1117/12.2309826
State	Published - 2018
Event	Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave - Austin, United States Duration: Jun 10 2018 → Jun 15 2018

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	10698
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Other

Other	Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave
Country/Territory	United States
City	Austin
Period	6/10/18 → 6/15/18

Funding

This work was supported by NASA NIAC grant number NNX15AL89G. The authors would also like to thank David Pappas, Dr. Marco Quadrelli, Dr. Peter Takacs, Dr. Ron Shiri, Drs. Steve Arnold and Drs. William W. Zhang for advice and support. We thank Giovanni Pareschi for suggesting working with MSM films in the first place.

Keywords

Deployable Optics
Magnetic Smart Materials
Magnetostriction
Membrane Mirrors
Post Deployment Correction
Space Mirrors
Space Telescopes

ASJC Scopus subject areas

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

Access to Document

10.1117/12.2309826

Cite this

Baturalp, T. B., Coverstone, V. L., Coppejans, R., Cao, J., Chung, Y., Buchholz, D. B., & Ulmer, M. P. (2018). Membrane mirror evaluation of APERTURE: A precise extremely large reflective telescope using re-configurable elements. In G. G. Fazio, H. A. MacEwen, & M. Lystrup (Eds.), Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave Article 106981K (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10698). SPIE. https://doi.org/10.1117/12.2309826

Baturalp, Turgut B. ; Coverstone, Victoria L. ; Coppejans, Rocco et al. / Membrane mirror evaluation of APERTURE : A precise extremely large reflective telescope using re-configurable elements. Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave. editor / Giovanni G. Fazio ; Howard A. MacEwen ; Makenzie Lystrup. SPIE, 2018. (Proceedings of SPIE - The International Society for Optical Engineering).

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title = "Membrane mirror evaluation of APERTURE: A precise extremely large reflective telescope using re-configurable elements",

abstract = "Larger mirrors are needed to satisfy the requirements of the next generation of UV-Vis space telescopes. Our NASA-NIAC funded project, titled A Precise Extremely large Reflective Telescope Using Reconfigurable Elements (APERTURE), attempts to meet this requirement. The aim of the project is to demonstrate technology that would deploy a large, continuous, high figure accuracy membrane mirror. The figure of the membrane mirror is corrected after deployment using a contiguous coating of a Magnetic Smart Material (MSM) and a magnetic field. The MSM is a magnetostrictive material which is driven by magnetic write head(s) (MWH), locally imposed on the non-reflective side of the membrane mirror. In this proceeding we report the figure accuracy of the MSM coated membrane mirror under various conditions using a Shack-Hartmann surface profiler. The figure accuracy and magnetostrictive performance of the membrane mirror is found to be significantly dependent on ambient temperature fluctuations, the tension load on the membrane, time, magnetic writing head orientation and magnetic field strength. The results and reproducibility of the surface profiling experiments under various conditions are introduced and discussed.",

keywords = "Deployable Optics, Magnetic Smart Materials, Magnetostriction, Membrane Mirrors, Post Deployment Correction, Space Mirrors, Space Telescopes",

author = "Baturalp, {Turgut B.} and Coverstone, {Victoria L.} and Rocco Coppejans and Jian Cao and Yipwah Chung and Buchholz, {David B.} and Ulmer, {M. P.}",

note = "Publisher Copyright: {\textcopyright} COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.; Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave ; Conference date: 10-06-2018 Through 15-06-2018",

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series = "Proceedings of SPIE - The International Society for Optical Engineering",

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Baturalp, TB, Coverstone, VL, Coppejans, R, Cao, J , Chung, Y, Buchholz, DB & Ulmer, MP 2018, Membrane mirror evaluation of APERTURE: A precise extremely large reflective telescope using re-configurable elements. in GG Fazio, HA MacEwen & M Lystrup (eds), Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave., 106981K, Proceedings of SPIE - The International Society for Optical Engineering, vol. 10698, SPIE, Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave, Austin, United States, 6/10/18. https://doi.org/10.1117/12.2309826

Membrane mirror evaluation of APERTURE: A precise extremely large reflective telescope using re-configurable elements. / Baturalp, Turgut B.; Coverstone, Victoria L.; Coppejans, Rocco et al.
Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave. ed. / Giovanni G. Fazio; Howard A. MacEwen; Makenzie Lystrup. SPIE, 2018. 106981K (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10698).

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

TY - GEN

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T2 - Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave

AU - Baturalp, Turgut B.

AU - Coverstone, Victoria L.

AU - Coppejans, Rocco

AU - Cao, Jian

AU - Chung, Yipwah

AU - Buchholz, David B.

AU - Ulmer, M. P.

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N2 - Larger mirrors are needed to satisfy the requirements of the next generation of UV-Vis space telescopes. Our NASA-NIAC funded project, titled A Precise Extremely large Reflective Telescope Using Reconfigurable Elements (APERTURE), attempts to meet this requirement. The aim of the project is to demonstrate technology that would deploy a large, continuous, high figure accuracy membrane mirror. The figure of the membrane mirror is corrected after deployment using a contiguous coating of a Magnetic Smart Material (MSM) and a magnetic field. The MSM is a magnetostrictive material which is driven by magnetic write head(s) (MWH), locally imposed on the non-reflective side of the membrane mirror. In this proceeding we report the figure accuracy of the MSM coated membrane mirror under various conditions using a Shack-Hartmann surface profiler. The figure accuracy and magnetostrictive performance of the membrane mirror is found to be significantly dependent on ambient temperature fluctuations, the tension load on the membrane, time, magnetic writing head orientation and magnetic field strength. The results and reproducibility of the surface profiling experiments under various conditions are introduced and discussed.

AB - Larger mirrors are needed to satisfy the requirements of the next generation of UV-Vis space telescopes. Our NASA-NIAC funded project, titled A Precise Extremely large Reflective Telescope Using Reconfigurable Elements (APERTURE), attempts to meet this requirement. The aim of the project is to demonstrate technology that would deploy a large, continuous, high figure accuracy membrane mirror. The figure of the membrane mirror is corrected after deployment using a contiguous coating of a Magnetic Smart Material (MSM) and a magnetic field. The MSM is a magnetostrictive material which is driven by magnetic write head(s) (MWH), locally imposed on the non-reflective side of the membrane mirror. In this proceeding we report the figure accuracy of the MSM coated membrane mirror under various conditions using a Shack-Hartmann surface profiler. The figure accuracy and magnetostrictive performance of the membrane mirror is found to be significantly dependent on ambient temperature fluctuations, the tension load on the membrane, time, magnetic writing head orientation and magnetic field strength. The results and reproducibility of the surface profiling experiments under various conditions are introduced and discussed.

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Baturalp TB, Coverstone VL, Coppejans R, Cao J , Chung Y, Buchholz DB et al. Membrane mirror evaluation of APERTURE: A precise extremely large reflective telescope using re-configurable elements. In Fazio GG, MacEwen HA, Lystrup M, editors, Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave. SPIE. 2018. 106981K. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2309826

Membrane mirror evaluation of APERTURE: A precise extremely large reflective telescope using re-configurable elements

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