Prof. Dániel Apai Profile

Prof. Dániel Apai

at Steward Observatory

SPIE Involvement:

Author

Publications (18)

Proceedings Article | 5 October 2023 Presentation

Ultralightweight hybrid refractive/diffractive MODE telescopes for space applications

Thomas Milster, Nick Brar, Yingying Zhang, Young-Sik Kim, Heejoo Choi, Marcos Esparza, Daewook Kim, Allen Yi, Yuxin Cai, Geonhee Kim, Daniel Apai

Proceedings Volume PC12677, PC126770G (2023) https://doi.org/10.1117/12.2677762

KEYWORDS: Telescopes, Optical alignment, Space telescopes, Optical fabrication, Lenses, Fabrication, Wavefronts, Stray light, Spectroscopy, Space mirrors

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Proceedings Article | 3 October 2022 Presentation + Paper

Initial testing of a MODE lens telescope

Youngsik Kim, Marcos Esparza, Zichan Wang, Nicholas Brar, Yingying Zhang, Daewook Kim, Heejoo Choi, Daniel Apai, Chuck Fellows, Allen Yi, Yuxin Cai, Geonhee Kim, Hwanjin Choi, Woojong Yeo, Tom Milster

Proceedings Volume 12221, 122210J (2022) https://doi.org/10.1117/12.2633443

KEYWORDS: Telescopes, Diffraction, Lens design, Spherical lenses, Optical instrument design, Optical fabrication, Glasses

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Proceedings Article | 3 October 2022 Presentation + Paper

Stray light analysis and testing of a MODE lens telescope

Youngsik Kim, Marcos Esparza, Zichan Wang, Nicholas Brar, Heejoo Choi, Daewook Kim, Daniel Apai, Tom Milster

Proceedings Volume 12221, 122210F (2022) https://doi.org/10.1117/12.2635495

KEYWORDS: Stray light, Telescopes, Stray light analysis, Ray tracing, Lens design, Cameras, Receivers, Optical testing, Optical fabrication

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Proceedings Article | 3 October 2022 Presentation + Paper

Autonomous closed-loop control for multi-segmented optic aligning and assembly

Heejoo Choi, Marcos A. Esparza, Ryan Luu, Tom Milster, Daniel Apai, Daewook Kim

Proceedings Volume 12221, 122210H (2022) https://doi.org/10.1117/12.2633760

KEYWORDS: Metrology, Optical alignment, Optics manufacturing, Telescopes, Segmented mirrors, Deflectometry, Automatic alignment

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Proceedings Article | 3 October 2022 Presentation + Paper

Progress towards alignment of Multi-Order Diffractive Engineered (MODE) lens segments using the Kinematically-Engaged Yoke System (KEYS) for optical performance testing

Marcos Esparza, Ryan Luu, Heejoo Choi, Tom Milster, Daniel Apai, Daewook Kim

Proceedings Volume 12221, 122210I (2022) https://doi.org/10.1117/12.2633685

KEYWORDS: Optical alignment, Telescopes, Optical testing, 3D modeling, Observatories, Magnetism, Glasses, Fresnel lenses, Tolerancing, Space observatories

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Proceedings Article | 3 October 2022 Presentation + Paper

Nautilus Space Observatory: a very large aperture space telescope constellation enabled by scalable optical manufacturing technologies

Dániel Apai, Tom Milster, Daewook Kim, Youngsik Kim, Glenn Schneider, Benjamin Rackham, Jonathan Arenberg, Heejoo Choi, Marcos Esparza, Zichan Wang, Yingying Zhang, Alex Bixel

Proceedings Volume 12221, 122210C (2022) https://doi.org/10.1117/12.2633184

KEYWORDS: Diffractive optical elements, Astrobiology, Telescopes, Space observatories, Planets, Space telescopes, James Webb Space Telescope, Space operations, Stars, Satellites, Optical fabrication

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Proceedings Article | 27 August 2022 Presentation + Paper

The Pandora SmallSat: a mission to spectroscopically study exoplanet atmospheres

Kelsey Hoffman, Elisa Quintana, Jessie Dotson, Knicole Colón, Thomas Barclay, Pete Supsinskas, Jordan Karburn, Dániel Apai, Christina Hedges, Benjamin Rackham, Jason Rowe, Jessie Christiansen, Thomas Greene, James Mason, Gregory Mosby, Néstor Espinoza, Emily Gilbert, Veselin Kostov, Nikole Lewis, Brett Morris, Susan Mullally, Elisabeth Newton, Joshua Schlieder, Allison Youngblood, Trevor Foote, Megan Mansfield, Kevin Stevenson, Steven Villanueva, Joshua Pepper

Proceedings Volume 12180, 121800C (2022) https://doi.org/10.1117/12.2629546

KEYWORDS: Exoplanets, Planets, Stars, Visible radiation, Spectroscopy, Near infrared, Telescopes, Contamination, Photometry, Atmospheric sensing

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Proceedings Article | 27 August 2022 Poster + Paper

Pandora SmallSat data simulation and target selection

Trevor Foote, Elisa Quintana, Jessie Dotson, Knicole Colón, Thomas Barclay, Pete Supsinskas, Jordan Karburn, Dániel Apai, Christina Hedges, Benjamin Rackham, Jason Rowe, Jessie Christiansen, Thomas Greene, James Mason, Gregory Mosby, Néstor Espinoza, Emily Gilbert, Kelsey Hoffman, Veselin Kostov, Nikole Lewis, Brett Morris, Susan Mullally, Elisabeth Newton, Joshua Schlieder, Allison Youngblood, Megan Mansfield, Kevin Stevenson, Steven Villanueva

Proceedings Volume 12180, 121802X (2022) https://doi.org/10.1117/12.2630131

KEYWORDS: James Webb Space Telescope, Near infrared, Atmospheric modeling, Point spread functions, Stars, Planets, Exoplanets, Atmospheric sciences, Sensors, Spectroscopy, Modeling and simulation

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Proceedings Article | 26 August 2022 Presentation + Paper

Imaging nearby, habitable-zone planets with the Large Binocular Telescope Interferometer

Steve Ertel, Kevin Wagner, Jarron Leisenring, Dániel Apai, Denis Defrère, Jeremy Dietrich, Joshua Eisner, Virginie Faramaz, William Hoffmann, Markus Kasper, Pete Klupar, Jared Males, Mark Marley, Hélène Rousseau, Stephanie Sallum, Eckhart Spalding, Jordan Stone, S. Pete Worden

Proceedings Volume 12183, 1218302 (2022) https://doi.org/10.1117/12.2635333

KEYWORDS: Planets, Stars, Sensors, Interferometry, Telescopes, Point spread functions, Spatial resolution, Nulling interferometry, Cameras, Mirrors

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Proceedings Article | 1 September 2021 Presentation + Paper

Imaging low-mass planets within the habitable zones of nearby stars with ground-based mid-infrared imaging

Kevin Wagner, Steve Ertel, Jordan Stone, Jarron Leisenring, Dániel Apai, Markus Kasper, Olivier Absil, Laird Close, Denis Defrère, Olivier Guyon, Jared Males

Proceedings Volume 11823, 118230G (2021) https://doi.org/10.1117/12.2596413

KEYWORDS: Planets, Exoplanets, Mid-IR, Stars, Telescopes, Coronagraphy, Sensors, Imaging systems, Adaptive optics, Astronomy

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Proceedings Article | 13 December 2020 Presentation + Paper

Prediction of the planet yield of the MaxProtoPlanetS high-contrast survey for H-alpha protoplanets with MagAO-X based on first light contrasts

Laird Close, Jared Males, Joseph Long, Kyle Van Gorkom, Alexander Hedglen, Maggie Kautz, Jennifer Lumbres, Sebastiaan Haffert, Katherine Follette, Kevin Wagner, Kelsey Miller, Daniel Apai, Ya-Lin Wu, Olivier Guyon, Lauren Schatz, Alex Rodack, David Doelman, Frans Snik, Justin Knight, Katie Morzinski, Victor Gasho, Christoph Keller, Logan Pearce, Alycia Weinberger, Laura Pérez, René Doyon

Proceedings Volume 11448, 114480U (2020) https://doi.org/10.1117/12.2561677

KEYWORDS: Imaging systems, Adaptive optics, Cameras, Actuators, Exoplanets, Planets, Hydrogen, Magnetism, Stars, Coronagraphy

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Proceedings Article | 20 August 2020 Presentation + Paper

In-process metrology for segmented optics UV curing control

Heejoo Choi, Marcos Esparza, Ariel Lamdan, Yi-Ting Feng, Tom Milster, Daniel Apai, Dae Wook Kim

Proceedings Volume 11487, 114870M (2020) https://doi.org/10.1117/12.2569310

KEYWORDS: Metrology, Optical fabrication, Optical alignment, Telescopes, Cameras, Tolerancing

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Proceedings Article | 9 September 2019 Presentation + Paper

Nautilus Observatory: a space telescope array based on very large aperture ultralight diffractive optical elements

Dániel Apai, Tom Milster, Dae Wook Kim, Alex Bixel, Glenn Schneider, Benjamin Rackham, Rongguang Liang, Jonathan Arenberg

Proceedings Volume 11116, 1111608 (2019) https://doi.org/10.1117/12.2529428

KEYWORDS: Telescopes, Lenses, Space telescopes, Planets, Observatories, Astrophysics, Optical fabrication, Exoplanets, Space observatories, Earth's atmosphere

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Proceedings Article | 1 October 2018 Paper

The Exo-Life Finder (ELF) telescope: New strategies for direct detection of exoplanet biosignatures and technosignatures

S. Berdyugina, J. Kuhn, M. Langlois, G. Moretto, J. Krissansen-Totton, D. Catling, J. L. Grenfell, T. Santl-Temkiv, K. Finster, J. Tarter, F. Marchis, H. Hargitai, D. Apai

Proceedings Volume 10700, 107004I (2018) https://doi.org/10.1117/12.2313781

KEYWORDS: Planets, Exoplanets, Earth's atmosphere, Stars, Telescopes, Signal to noise ratio, Atmospheric sensing, Atmospheric modeling, Gases, Organisms

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Proceedings Article | 24 July 2014 Paper

Toward visible wavelength coherent imaging with the LBT

Philip Hinz, S. Esposito, D. Apai, G. Brusa, L. Close, O. Guyon, J. Hill, J. Males, E. Pinna, A. Puglisi

Proceedings Volume 9146, 914605 (2014) https://doi.org/10.1117/12.2057695

KEYWORDS: Cameras, Coherence imaging, Imaging systems, Sensors, Adaptive optics, Point spread functions, Stars, Exoplanets, Planets, Wavefront sensors

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Proceedings Article | 21 July 2014 Paper

High contrast imaging at the LBT: the LEECH exoplanet imaging survey

Andrew Skemer, Philip Hinz, Simone Esposito, Michael Skrutskie, Denis Defrère, Vanessa Bailey, Jarron Leisenring, Daniel Apai, Beth Biller, Mickaël Bonnefoy, Wolfgang Brandner, Esther Buenzli, Laird Close, Justin Crepp, Robert De Rosa, Silvano Desidera, Josh Eisner, Jonathan Fortney, Thomas Henning, Karl-Heinz Hofmann, Taisiya Kopytova, Anne-Lise Maire, Jared Males, Rafael Millan-Gabet, Katie Morzinski, Apurva Oza, Jenny Patience, Abhijith Rajan, George Rieke, Dieter Schertl, Joshua Schlieder, Kate Su, Amali Vaz, Kimberly Ward-Duong, Gerd Weigelt, Charles Woodward, Neil Zimmerman

Proceedings Volume 9148, 91480L (2014) https://doi.org/10.1117/12.2057277

KEYWORDS: Planets, Stars, Exoplanets, Telescopes, Adaptive optics, Imaging systems, Mirrors, Cameras, Wavefront sensors, Interferometers

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Proceedings Article | 28 June 2006 Paper

High contrast L' band adaptive optics imaging to detect extrasolar planets

Ari Heinze, Phil Hinz, Suresh Sivanandam, Daniel Apai, Michael Meyer

Proceedings Volume 6272, 62723S (2006) https://doi.org/10.1117/12.672502

KEYWORDS: Planets, Stars, Telescopes, Monte Carlo methods, Point spread functions, Adaptive optics, Exoplanets, Image processing, Imaging systems, L band

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Proceedings Article | 13 February 2003 Paper

VLT-ISAAC observations of massive star-forming regions

Bringfried Stecklum, Thomas Henning, Daniel Apai, Hendrik Linz

Proceedings Volume 4834, (2003) https://doi.org/10.1117/12.457594

KEYWORDS: Stars, Near infrared, Bromine, Infrared imaging, Polarimetry, Thermography, Image filtering, Data archive systems, K band, Phase modulation

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Showing 5 of 18 publications

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