Large Field-of-View Spectropolarimetric Observations with a Large Aperture Telescope

Details Large Field-of-View Spectropolarimetric Observations with a Large Aperture Telescope Large Field-of-View Spectropolarimetric Observations with a Large Aperture Telescope

Feb 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012soph..276..451m&link_type=abstract

Solar Physics, Volume 276, Issue 1-2, pp. 451-477

Physics

Scientific paper

In the context of the increasing interest in large-aperture telescopes dedicated to the Sun, we present a study to evaluate the adaptive-optics system limitations on the requirements expected for magnetic-field extrapolations and data-driven MHD simulations of active regions. The questions we address include: What is the size of the field of view at high spatial resolution for a four-meter class telescope with a spectrograph? What is the impact of the selected spectral domain on the performance in relation to the aforementioned scientific goals? We show that the visible-wavelength domain remains difficult to explore with ground-based telescopes using classical adaptive optics systems. The field of view obtained will be only a few arcseconds at the diffraction limit for most of the time. We review alternative configurations of adaptive-optics systems for different telescope apertures and wavelength domains which could be considered for practical implementation in derivations of the magnetic field from polarimetric observations.

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