Analysis of active alignment control of the Hobby-Eberly Telescope wide field corrector using Shack-Hartmann wavefront sensors

Hanshin Lee; Michael Hart; Gary J. Hill; M. D. Rafal

doi:10.1117/12.857121

Analysis of active alignment control of the Hobby-Eberly Telescope wide field corrector using Shack-Hartmann wavefront sensors

Hanshin Lee, Michael Hart, Gary J. Hill, M. D. Rafal

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

24 Scopus citations

Abstract

One of the key aspects of the Wide-Field Upgrade (WFU) for the 10m Hobby-Eberly Telescope (HET) is the use of wavefront sensing (WFS) to close the loop of active alignment control of the new four-mirror Wide-Field Corrector (WFC), as it tracks sidereal motion, with respect to the fixed spherical segmented primary mirror. This makes the telescope pupil dynamically change in shape. This is a unique challenge to the WFS on the HET, in addition to various influences of seeing, primary mirror segment errors, and dynamic deflection of the internal optical components of the WFC. We conducted extensive simulations to understand the robustness of the WFS in the face of these errors and the results of these analyses are discussed in this paper.

Original language	English (US)
Title of host publication	Modeling, Systems Engineering, and Project Management for Astronomy IV
DOIs	https://doi.org/10.1117/12.857121
State	Published - 2010
Externally published	Yes
Event	Modeling, Systems Engineering, and Project Management for Astronomy IV - San Diego, CA, United States Duration: Jun 27 2010 → Jul 1 2010

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	7738
ISSN (Print)	0277-786X

Conference

Conference	Modeling, Systems Engineering, and Project Management for Astronomy IV
Country/Territory	United States
City	San Diego, CA
Period	6/27/10 → 7/1/10

Keywords

HETDEX
Hobby-Eberly Telescope
Shack-Hartmann wavefront sensor
Wavefront sensing

ASJC Scopus subject areas

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

Access to Document

10.1117/12.857121

Cite this

Lee, H., Hart, M., Hill, G. J., & Rafal, M. D. (2010). Analysis of active alignment control of the Hobby-Eberly Telescope wide field corrector using Shack-Hartmann wavefront sensors. In Modeling, Systems Engineering, and Project Management for Astronomy IV Article 77380I (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7738). https://doi.org/10.1117/12.857121

Analysis of active alignment control of the Hobby-Eberly Telescope wide field corrector using Shack-Hartmann wavefront sensors. / Lee, Hanshin; Hart, Michael; Hill, Gary J. et al.
Modeling, Systems Engineering, and Project Management for Astronomy IV. 2010. 77380I (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7738).

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

Lee, H, Hart, M, Hill, GJ & Rafal, MD 2010, Analysis of active alignment control of the Hobby-Eberly Telescope wide field corrector using Shack-Hartmann wavefront sensors. in Modeling, Systems Engineering, and Project Management for Astronomy IV., 77380I, Proceedings of SPIE - The International Society for Optical Engineering, vol. 7738, Modeling, Systems Engineering, and Project Management for Astronomy IV, San Diego, CA, United States, 6/27/10. https://doi.org/10.1117/12.857121

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abstract = "One of the key aspects of the Wide-Field Upgrade (WFU) for the 10m Hobby-Eberly Telescope (HET) is the use of wavefront sensing (WFS) to close the loop of active alignment control of the new four-mirror Wide-Field Corrector (WFC), as it tracks sidereal motion, with respect to the fixed spherical segmented primary mirror. This makes the telescope pupil dynamically change in shape. This is a unique challenge to the WFS on the HET, in addition to various influences of seeing, primary mirror segment errors, and dynamic deflection of the internal optical components of the WFC. We conducted extensive simulations to understand the robustness of the WFS in the face of these errors and the results of these analyses are discussed in this paper.",

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Analysis of active alignment control of the Hobby-Eberly Telescope wide field corrector using Shack-Hartmann wavefront sensors

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Keywords

ASJC Scopus subject areas

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