SIMBAD references

2004ApJ...608.1095D - Astrophys. J., 608, 1095-1099 (2004/June-3)

Using notch-filter masks for high-contrast imaging of extrasolar planets.

DEBES J.H., GE J., KUCHNER M.J. and ROGOSKY M.

Abstract (from CDS):

We present the first laboratory experiments using a notch-filter mask, a coronagraphic image mask that can produce infinite dynamic range in an ideal Lyot coronagraph, according to scalar diffraction theory. We fabricated the first notch-filter mask prototype with 0.25 µm precision using an electron-beam lithography machine. Our initial optical tests show that the prototype masks generate contrast levels of 10–5 at 3λ/D and 10–6 at ∼8λ/D, with a throughput of 27%. We speculate on the ``as-is'' performance of such a mask in the Hubble Space Telescope.

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Journal keyword(s): Stars: Circumstellar Matter - Instrumentation: Adaptive Optics - Methods: Laboratory - Stars: Planetary Systems

Simbad objects: 1

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