A REFLECTIVE SHACK-HARTMANN WAVE-FRONT SENSOR FOR ADAPTIVE OPTICS

被引：7

作者：

COLUCCI, D ^{[1
]}

LLOYDHART, M ^{[1
]}

WITTMAN, D ^{[1
]}

ANGEL, R ^{[1
]}

GHEZ, A ^{[1
]}

MCLEOD, B ^{[1
]}

机构：

[1] UNIV ARIZONA,STEWARD OBSERV,TUCSON,AZ 85721

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC | 1994年 / 106卷 / 704期

关键词：

D O I：

10.1086/133484

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We describe a new wave-front sensor based on the efficient Shack-Hartmann quad cell system. The key improvement to existing designs is a modified lenslet array. The traditional refractive lenslet array is replaced with a segmented reflective system that allows individual control of each subaperture. This system has produced diffraction-limited slope correction of the six 1.83-m mirrors of the MMT using a 9.9V magnitude guide star and significant image improvement on guide stars as faint as 11.3V magnitude, limited by the readout noise of the CCD quad cell detector. Recent experiments with an improved detector indicate diffraction-limited imaging on guide stars as faint as the 15th magnitude. This optimized wave-front sensor, equally applicable to filled-aperture telescopes, promises to extend the amount of sky coverage available for adaptive correction in the near IR.

引用

页码：1104 / 1110

页数：7

共 12 条

[1]

ABEL IR, 1980, P SOC PHOTO-OPT INS, V327, P271

[2] STATISTICS OF A GEOMETRIC REPRESENTATION OF WAVEFRONT DISTORTION [J].