A Versatile CCD Wave Front Curvature Sensor

Details A Versatile CCD Wave Front Curvature Sensor A Versatile CCD Wave Front Curvature Sensor

Mar 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998pasp..110..330b&link_type=abstract

The Publications of the Astronomical Society of the Pacific, Volume 110, Issue 745, pp. 330-338.

Physics

Optics

2

Telescopes: Optics

Scientific paper

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 64x64 device with a DSP56002-based 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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