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Alex Feller
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The Imaging Magnetograph eXperiment (IMaX) for the Sunrise Balloon-Borne Solar Observatory
V Martínez Pillet, JC Del Toro Iniesta, A Álvarez-Herrero, V Domingo, ...
Solar Physics 268, 57-102, 2011
3092011
Sunrise: instrument, mission, data, and first results
SK Solanki, P Barthol, S Danilovic, A Feller, A Gandorfer, J Hirzberger, ...
The Astrophysical Journal Letters 723 (2), L127, 2010
2802010
The Sunrise Mission
P Barthol, A Gandorfer, SK Solanki, M Schüssler, B Chares, W Curdt, ...
Domingo, JL Gasent Blesa, JC Del Toro Iniesta, A. López Jiménez, A. Álvarez …, 2011
2642011
Solar polarimetry in the near UV with the Zurich Imaging Polarimeter ZIMPOL II
AM Gandorfer, HP Povel, P Steiner, F Aebersold, U Egger, A Feller, ...
Astronomy & Astrophysics 422 (2), 703-708, 2004
1322004
Fully resolved quiet-sun magnetic flux tube observed with the SUNRISE/IMAX instrument
A Lagg, SK Solanki, TL Riethmüller, VM Pillet, M Schüssler, J Hirzberger, ...
The Astrophysical Journal Letters 723 (2), L164, 2010
1282010
The second flight of the SUNRISE balloon-borne solar observatory: overview of instrument updates, the flight, the data, and first results
SK Solanki, TL Riethmüller, P Barthol, S Danilovic, W Deutsch, HP Doerr, ...
The Astrophysical Journal Supplement Series 229 (1), 2, 2017
1112017
The Filter Imager SuFI and the Image Stabilization and Light Distribution System ISLiD of the Sunrise Balloon-Borne Observatory: Instrument Description
A Gandorfer, B Grauf, P Barthol, TL Riethmüller, SK Solanki, B Chares, ...
Solar Physics 268, 35-55, 2011
1102011
Structure and dynamics of isolated internetwork Ca II H bright points observed by SUNRISE
S Jafarzadeh, SK Solanki, A Feller, A Lagg, A Pietarila, S Danilovic, ...
Astronomy & Astrophysics 549, A116, 2013
722013
Comparison of solar photospheric bright points between Sunrise observations and MHD simulations
TL Riethmüller, SK Solanki, SV Berdyugina, M Schüssler, VM Pillet, ...
Astronomy & Astrophysics 568, A13, 2014
702014
Bright points in the quiet Sun as observed in the visible and near-UV by the balloon-borne observatory SUNRISE
TL Riethmüller, SK Solanki, VM Pillet, J Hirzberger, A Feller, JA Bonet, ...
The Astrophysical Journal Letters 723 (2), L169, 2010
602010
Three-dimensional structure of a sunspot light bridge
T Felipe, M Collados, E Khomenko, C Kuckein, AA Ramos, H Balthasar, ...
Astronomy & Astrophysics 596, A59, 2016
532016
Achromatic liquid crystal polarization modulator
D Gisler, A Feller, AM Gandorfer
Polarimetry in Astronomy 4843, 45-54, 2003
472003
Point spread function of SDO/HMI and the effects of stray light correction on the apparent properties of solar surface phenomena
KL Yeo, A Feller, SK Solanki, S Couvidat, S Danilovic, NA Krivova
Astronomy & Astrophysics 561, A22, 2014
462014
Migration of Ca II H bright points in the internetwork
S Jafarzadeh, RH Cameron, SK Solanki, A Pietarila, A Feller, A Lagg, ...
Astronomy & Astrophysics 563, A101, 2014
452014
The European Solar Telescope
CQ Noda, R Schlichenmaier, LRB Rubio, MG Löfdahl, E Khomenko, ...
Astronomy & Astrophysics 666, A21, 2022
412022
Instrumentation for solar spectropolarimetry: state of the art and prospects
FA Iglesias, A Feller
Optical Engineering 58 (8), 082417-082417, 2019
412019
High-resolution, high-sensitivity, ground-based solar spectropolarimetry with a new fast imaging polarimeter-I. Prototype characterization
FA Iglesias, A Feller, K Nagaraju, SK Solanki
Astronomy & Astrophysics 590, A89, 2016
412016
Quiet-sun intensity contrasts in the near-ultraviolet as measured from SUNRISE
J Hirzberger, A Feller, TL Riethmüller, M Schüssler, JM Borrero, N Afram, ...
The Astrophysical Journal Letters 723 (2), L154, 2010
412010
Probing deep photospheric layers of the quiet Sun with high magnetic sensitivity
A Lagg, SK Solanki, HP Doerr, MJM González, T Riethmüller, MC Vera, ...
Astronomy & Astrophysics 596, A6, 2016
392016
Deep probing of the photospheric sunspot penumbra: no evidence of field-free gaps
JM Borrero, AA Ramos, M Collados, R Schlichenmaier, H Balthasar, ...
Astronomy & Astrophysics 596, A2, 2016
382016
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