Active optics and wavefront sensing at the upgraded 6.5-meter MMT

T. E. Pickering; S. C. West; D. G. Fabricant

doi:10.1117/12.551008

Active optics and wavefront sensing at the upgraded 6.5-meter MMT

T. E. Pickering, S. C. West, D. G. Fabricant

Research output: Contribution to journal › Conference article › peer-review

15 Scopus citations

Abstract

Shack-Hartmann wavefront sensors have been commissioned and are now in routine use at both of the optical foci (f/9 and f/5) of the converted MMT. Both units are of moderate resolution with 14 × 14 square apertures across the pupil for f/5 and 13 ×13 hexagonal apertures for f/9. They share a common software interface that fits a set of 19 Zernike polynomials to the wavefront errors. Zernike focus and coma are corrected by moving the secondary mirror, third order spherical by a combination of secondary motion and primary bending, and the rest by primary bending alone. In this paper we will describe the two wavefront sensor systems and how they have performed thus far.

Original language	English (US)
Pages (from-to)	1041-1051
Number of pages	11
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5489
Issue number	PART 2
DOIs	https://doi.org/10.1117/12.551008
State	Published - 2004
Externally published	Yes
Event	Ground-based Telescopes - Glasgow, United Kingdom Duration: Jun 21 2004 → Jun 25 2004

Keywords

Active
Large
Shack-
Wavefront

ASJC Scopus subject areas

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

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10.1117/12.551008

Cite this

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abstract = "Shack-Hartmann wavefront sensors have been commissioned and are now in routine use at both of the optical foci (f/9 and f/5) of the converted MMT. Both units are of moderate resolution with 14 × 14 square apertures across the pupil for f/5 and 13 ×13 hexagonal apertures for f/9. They share a common software interface that fits a set of 19 Zernike polynomials to the wavefront errors. Zernike focus and coma are corrected by moving the secondary mirror, third order spherical by a combination of secondary motion and primary bending, and the rest by primary bending alone. In this paper we will describe the two wavefront sensor systems and how they have performed thus far.",

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AU - Pickering, T. E.

AU - West, S. C.

AU - Fabricant, D. G.

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AB - Shack-Hartmann wavefront sensors have been commissioned and are now in routine use at both of the optical foci (f/9 and f/5) of the converted MMT. Both units are of moderate resolution with 14 × 14 square apertures across the pupil for f/5 and 13 ×13 hexagonal apertures for f/9. They share a common software interface that fits a set of 19 Zernike polynomials to the wavefront errors. Zernike focus and coma are corrected by moving the secondary mirror, third order spherical by a combination of secondary motion and primary bending, and the rest by primary bending alone. In this paper we will describe the two wavefront sensor systems and how they have performed thus far.

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Active optics and wavefront sensing at the upgraded 6.5-meter MMT

Abstract

Keywords

ASJC Scopus subject areas

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