Multi-core fibre-fed integral-field unit (MCIFU): overview and first-light

SY Haffert, RJ Harris, A Zanutta, FA Pike… - … Optics Systems VII, 2020 - spiedigitallibrary.org
The Multi-Core Integral-Field Unit (MCIFU) is a new diffraction-limited near-infrared integral-field
unit for exoplanet atmosphere characterization with extreme adaptive optics (xAO) …

Astronomical polarimetry: polarized views of stars and planets

F Snik, CU Keller - … , Stars and Stellar Systems. Volume 2 …, 2013 - ui.adsabs.harvard.edu
Polarization is a fundamental property of light from astronomical objects, and measuring that
polarization often yields crucial information, which is unobtainable otherwise. This chapter …

SPHERE ZIMPOL: overview and performance simulation

C Thalmann, HM Schmid, A Boccaletti… - Ground-based and …, 2008 - spiedigitallibrary.org
The ESO planet finder instrument SPHERE will search for the polarimetric signature of the
reflected light from extrasolar planets, using a VLT telescope, an extreme AO system (SAXO), …

Two accreting protoplanets around the young star PDS 70

SY Haffert, AJ Bohn, J De Boer, IAG Snellen… - Nature …, 2019 - nature.com
Newly forming protoplanets are expected to create cavities and substructures in young, gas-rich
protoplanetary disks 1 , 2 – 3 , but they are difficult to detect as they could be confused …

[HTML][HTML] The second solar spectrum. A new window for diagnostics of the Sun.

JO Stenflo, CU Keller - Astronomy and Astrophysics, v. 321, p …, 1997 - adsabs.harvard.edu
The second solar spectrum. A new window for diagnostics of the Sun. ADS Classic is now
deprecated. It will be completely retired in October 2019. This page will automatically redirect to …

On the origin of solar faculae

CU Keller, M Schüssler, A Vögler… - The Astrophysical …, 2004 - iopscience.iop.org
Solar faculae appear as bright small features close to the solar limb. Recent high-resolution
images show these brightenings in unprecedented detail. Our analysis of numerical MHD …

Spectral modulation for full linear polarimetry

F Snik, T Karalidi, CU Keller - Applied Optics, 2009 - opg.optica.org
Linear (spectro) polarimetry is usually performed using separate photon flux measurements
after spatial or temporal polarization modulation. Such classical polarimeters are limited in …

Mapping atmospheric aerosols with a citizen science network of smartphone spectropolarimeters

F Snik, JHH Rietjens, A Apituley… - Geophysical …, 2014 - Wiley Online Library
To assess the impact of atmospheric aerosols on health, climate, and air traffic, aerosol
properties must be measured with fine spatial and temporal sampling. This can be achieved by …

Direct detection of scattered light gaps in the transitional disk around HD 97048 with VLT/SPHERE

C Ginski, T Stolker, P Pinilla, C Dominik… - Astronomy & …, 2016 - aanda.org
Aims. We studied the well-known circumstellar disk around the Herbig Ae/Be star HD 97048
with high angular resolution to reveal undetected structures in the disk which may be …

SOLIS: an innovative suite of synoptic solar instruments

CU Keller, JW Harvey… - … and instrumentation for …, 2003 - spiedigitallibrary.org
SOLIS (Synoptic Optical Long-term Investigations of the Sun) is a suite of three innovative
instruments under construction that will greatly improve ground-based synoptic solar …