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