By Henri M. J. Boffin, Gaitee Hussain, Jean-Philippe Berger, Linda Schmidtobreick

This booklet deals a necessary compendium of astronomical high-resolution ideas. fresh years have visible enormous advancements in such ideas, that are severe to advances in lots of components of astronomy. As mirrored within the booklet, those thoughts might be divided into direct equipment, interferometry, and reconstruction equipment, and will be utilized to a massive number of astrophysical structures, starting from planets, unmarried stars and binaries to lively galactic nuclei, offering angular answer within the micro- to tens of milliarcsecond scales. Written by way of specialists of their fields, the chapters conceal adaptive optics, aperture overlaying imaging, spectra disentangling, interferometry, fortunate imaging, Roche tomography, imaging with interferometry, interferometry of AGN, AGN reverberation mapping, Doppler- and magnetic imaging of stellar surfaces, Doppler tomography, eclipse mapping, Stokes imaging, and stellar tomography.

This e-book is meant to allow a subsequent new release of astronomers to use high-resolution concepts. It informs readers on tips on how to in attaining the easiest angular answer within the seen and near-infrared regimes from diffraction-limited to micro-arcsecond scales.

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Extra info for Astronomy at High Angular Resolution: A Compendium of Techniques in the Visible and Near-Infrared

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The actuators are made of a dense array of voice calls that create a magnetic field to drive the magnets attached to the mirror thin shell. It provides a fast response but dissipates much heat. It currently equips the LBT and MagAO. 3 The Transition to Extreme AO Systems Extreme AO systems is an evolution of the concept of single-conjugated AO systems to reach the requirements described in Sect. 2 for the detection of exoplanets: high contrast at short separations below 100 . This translates into a requirement for 26 J.

These new systems benefited from the lessons learnt from the first generations of instruments and will in turn provide valuable feedback for the on-going design of AO systems for extremely large telescopes. The first xAO systems on sky were the PALM3000/P1640 [13, 47], followed by MagAO [12]. Now three systems had their first light in the last two years: GPI at Gemini South [31], SCExAO at Subaru [18] and SPHERE at the VLT [6]. 2 summarises the main instruments and AO systems contributing or having contributed to the field.

Soc. Am. 68(12), 1651 (1978) 13. : A highly efficient Lucky Imaging algorithm: image synthesis based on Fourier amplitude selection. PASP 124, 861 (2012) 14. : Lucky imaging multiplicity studies of exoplanet host stars. Contrib. Astron. Obs. Skalnate Pleso 43, 410 (2014) 15. : The AstraLux Sur Lucky Imaging instrument at the NTT. The Messenger 137, 14 (2009) 16. D. thesis, Faculty of Physics and Astronomy, University of Heidelberg (2007) 17. : Direct imaging of the young spectroscopic binary HD 160934.

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