A Versatile CCD Wave Front Curvature Sensor | Zendy

Greg Burley | Zendy; G. A. H. Walker | Zendy; R. Johnson | Zendy

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A Versatile CCD Wave Front Curvature Sensor

Author(s) -

Greg Burley,

G. A. H. Walker,

R. Johnson

Publication year - 1998

Publication title -

publications of the astronomical society of the pacific

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.294

H-Index - 172

eISSN - 1538-3873

pISSN - 0004-6280

DOI - 10.1086/316134

Subject(s) - pixel , curvature , detector , noise (video) , frame (networking) , computer science , optics , software , controller (irrigation) , front and back ends , physics , acoustics , artificial intelligence , telecommunications , image (mathematics) , agronomy , geometry , mathematics , biology , programming language , operating system

Small-format CCD detectors are well suited to wave front sensing applications. The prototype wave front sensor described here is based on a low-noise frame transfer device with a DSP56002-based 64 # 64 controller. The subaperture patterns necessary for curvature sensing are formed by extensive serial register binning. The reduced number of pixels allows rapid frame rates with low readout noise. The CCD is thermoelectrically cooled to minimize dark current. Versatility is achieved by having the serial binning pattern and the number of subapertures under software control.

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