Aspects of error budgeting for coronagraphic differential imaging: effects of dust and cosmetic errors

Kjetil Dohlen

doi:10.1117/12.789935

7 July 2008 Aspects of error budgeting for coronagraphic differential imaging: effects of dust and cosmetic errors

Kjetil Dohlen

Proceedings Volume 7017, Modeling, Systems Engineering, and Project Management for Astronomy III; 70171V (2008) https://doi.org/10.1117/12.789935
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

Abstract

The SPHERE (Spectro-Polarimetric High-contrast Exoplanet Research) planet finder instrument for ESO's VLT telescope, scheduled for first light in 2011, aims to detect giant extra-solar planets in the vicinity of bright stars by the aid of an extreme-AO turbulence compensation system and coronagraphic diffraction suppression. Objects found will be characterized through spectroscopic and polarimetric observations. I consider here the effects of micro-obstructions of the beam due to dust and cosmetic defects on the SPHERE image quality.

Citation Download Citation

Kjetil Dohlen "Aspects of error budgeting for coronagraphic differential imaging: effects of dust and cosmetic errors", Proc. SPIE 7017, Modeling, Systems Engineering, and Project Management for Astronomy III, 70171V (7 July 2008); https://doi.org/10.1117/12.789935

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