Optical design and preliminary results of NEW EARTH, first Canadian high-contrast imaging laboratory test bench
Type
Conference PaperAuthors
Lardière, OlivierGerard, Benjamin
Thompson, William
Marois, Christian
Véran, Jean Pierre
Blain, Célia
Heidrich, Wolfgang

Fu, Qiang

KAUST Department
Computational Imaging GroupComputer Science Program
Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division
Visual Computing Center (VCC)
Date
2020-12-13Permanent link to this record
http://hdl.handle.net/10754/667667
Metadata
Show full item recordAbstract
The NEW EARTH Laboratory (NRC Extreme Wavefront control for Exoplanet Adaptive optics Research Topics at Herzberg) has recently been completed at NRC in Victoria. NEW EARTH is the first Canadian test-bed dedicated to high-contrast imaging. The bench optical design allows a wide range of applications that could require turbulent phase screens, segmented pupils, or custom coronagraphic masks. Super-polished off-axis parabolas are implemented to minimize optical aberrations, in addition to a 468-actuator ALPAO deformable mirror and a Shack Hartmann WFS. The laboratory's immediate goal is to validate the Fast Atmospheric Self-coherent camera Technique (FAST). The first results of this technique obtained in the NEW EARTH laboratory with a Tilt-Gaussian-Vortex focal plane mask, a reflective Lyot stop and Coherent Differential Imaging are encouraging. Future work will be aimed at expanding this technique to broader wavebands in the context of extremely large telescopes and at visible bands for space-based observatories.Citation
Lardière, O., Gerard, B. L., Thompson, W., Marois, C., Véran, J.-P., Blain, C., … Fu, Q. (2020). Optical design and preliminary results of NEW EARTH, first Canadian high-contrast imaging laboratory test bench. Adaptive Optics Systems VII. doi:10.1117/12.2561803Publisher
SPIE-Intl Soc Optical EngConference/Event name
Adaptive Optics Systems VII 2020ISBN
9781510636835ae974a485f413a2113503eed53cd6c53
10.1117/12.2561803