The GPI Post-Coronagraph Wavefront Sensing Instrument

Details The GPI Post-Coronagraph Wavefront Sensing Instrument The GPI Post-Coronagraph Wavefront Sensing Instrument

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010lyot.confe..55b&link_type=abstract

Proceedings of the conference In the Spirit of Lyot 2010: Direct Detection of Exoplanets and Circumstellar Disks. October 25 -

Computer Science

Performance

Scientific paper

The calibration wavefront system for GPI measures the complex wavefront at the coronograph's apodized pupil, and provides slow phase corrections to the AO system to mitigate against errors that would cause a loss in contrast. This talk describes the low-order and high-order sensors in the calibration wavefront sensor and how the information is combined to form the wavefront estimate before the coronagraph. The instrument has now been fully assembled and tested against system level requirements. This talk will describe the performance of the as built instrument.

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