A Versatile CCD Wave Front Curvature Sensor
Open Access
- 1 March 1998
- journal article
- research article
- Published by IOP Publishing in Publications of the Astronomical Society of the Pacific
- Vol. 110 (745) , 330-338
- https://doi.org/10.1086/316134
Abstract
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 64 × 64 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.Keywords
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