High-dynamic-range imaging with the phase knife coronagraph: theory and first laboratory results

Lyu Abe; Armando Domiciano de Souza Jr.; Farrokh Vakili

doi:10.1117/12.457638

3 March 2003 High-dynamic-range imaging with the phase knife coronagraph: theory and first laboratory results

Lyu Abe, Armando Domiciano de Souza Jr., Farrokh Vakili

Proceedings Volume 4860, High-Contrast Imaging for Exo-Planet Detection; (2003) https://doi.org/10.1117/12.457638
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

We report experimental results from the Phase Knife Coronagaph which validate our previous theoretical and numerical simulations, prove the physical principle of it and set realistic limitations to the nulling properties of the coronagraph. The optical set-up, phase knives manufacturing technique and different aspects of the instrumental limitations are given. The first results attain easily a 3000 nulling effect obtained both on single and double simulated stars. Optical and mechanical stabilities are discussed and future steps to be carried out are outlined.

Citation Download Citation

Lyu Abe, Armando Domiciano de Souza Jr., and Farrokh Vakili "High-dynamic-range imaging with the phase knife coronagraph: theory and first laboratory results", Proc. SPIE 4860, High-Contrast Imaging for Exo-Planet Detection, (3 March 2003); https://doi.org/10.1117/12.457638

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