Dr. Yunjong Kim Profile

Dr. Yunjong Kim

Senior Researcher at Korea Astronomy and Space Science Institute

SPIE Involvement:

Author

Publications (25)

Proceedings Article | 5 October 2023 Presentation

Fabrication of freeform mirrors for the KASI-Deep Rolling Imaging Fast Telescope

Dohoon Kim, Changhee Lee, JaeYeong Jo, Hong Ki Kim, Taejong Kim, Minho Seo, Byoung-hyun Park, Hyun-il Cho, Yunjong Kim, Jongwan Ko, Young-Soo Kim

Proceedings Volume PC12677, PC126770C (2023) https://doi.org/10.1117/12.2677323

KEYWORDS: Mirrors, Mirror surfaces, Telescopes, Fabrication, Surface finishing, Polishing, Optical surfaces, Off axis mirrors, Computer generated holography, Silver

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Proceedings Article | 4 October 2023 Poster + Paper

Low-to-mid spatial frequency wavefront error control for off-axis freeform three-mirror KASI-deep rolling imaging fast telescope

Gayoung Lee, Yunjong Kim, Daewook Kim, Woowon Byun, Changsu Choi, Yongseok Lee, Dohoon Kim, Seunghyuk Chang, Jongwan Ko

Proceedings Volume 12677, 126770P (2023) https://doi.org/10.1117/12.2676309

KEYWORDS: Point spread functions, Wavefront errors, Mirrors, Error analysis, Error control coding, Telescopes, Spatial frequencies, Fabrication, Device simulation, Optical mounts

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Proceedings Article | 4 October 2023 Poster + Paper

Tolerance analysis of off-axis freeform three-mirror KASI-deep rolling imaging fast telescope

Yunjong Kim, Gayoung Lee, Jihun Kim, Seunghyuk Chang, Dohoon Kim, Il Kweon Moon, Daewook Kim, Jongwan Ko

Proceedings Volume 12677, 126770O (2023) https://doi.org/10.1117/12.2674544

KEYWORDS: Tolerancing, Mirrors, Telescopes, Monte Carlo methods, Optical design, Monochromatic aberrations, Mirror surfaces, Astronomical imaging, Wavefront errors

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Proceedings Article | 4 October 2023 Presentation + Paper

Optical design and analysis of the ROKITS cameras

Jihun Kim, Youngju Kim, Seonghwan Choi, Dukhang Lee, Gwanghui Jeong, Jongyeob Park, Ji-Hye Baek, Yunjong Kim, Tae-Yong Yang, Jaeheung Park, Kyoung-min Roh, Young-Sil Kwak, Chanhaeng Lee, Jong-Kyun Chung, Woo kyoung Lee

Proceedings Volume 12676, 126760U (2023) https://doi.org/10.1117/12.2676608

KEYWORDS: Optical design, Cameras, Tolerancing, Optical filters, Modulation transfer functions, Earth's atmosphere, Sensors, Atmospheric sciences, Auroras

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Proceedings Article | 28 September 2023 Poster

Alignment strategy of an NA 0.8 Deep UV objective system for semiconductor defect inspection

Yunjong Kim, Young-Soo Kim, Dong-Kyun Kim, Hyun-il Cho

Proceedings Volume 12669, 126690O (2023) https://doi.org/10.1117/12.2676602

KEYWORDS: Semiconductors, Optical alignment, Defect inspection, Objectives, Deep ultraviolet, Nanolithography, Lenses, Statistical analysis, Design and modelling, Combined lens-mirror systems

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Proceedings Article | 29 August 2022 Poster + Paper

Design and development of the IGRINS-2 control software as a facility instrument of the Gemini observatory

Hye-In Lee, Francisco Ramos, Pablo Prado, Hwihyun Kim, Heeyoung Oh, Chan Park, Ueejeong Jeong, Moo-Young Chun, Jae-Joon Lee, Young Sam Yu, Sungho Lee, Sanghyuk Kim, Jae Sok Oh, Yunjong Kim, In-Soo Yuk

Proceedings Volume 12189, 121891Y (2022) https://doi.org/10.1117/12.2628852

KEYWORDS: Gemini Observatory, Control systems, Software development, Telescopes, Infrared telescopes, Infrared spectroscopy

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Proceedings Article | 29 August 2022 Presentation

G@M: Design of the Giant Magellan Telescope Consortium Large Earth Finder (G-CLEF) for operations at the Magellan telescopes.

Andrew Szentgyorgyi, Stuart McMuldroch, Sagi Ben-Ami, Kang-Min Kim, Chan Park, Daniel Baldwin, Stuart Barnes, Daniel Bednarski, Jacob Bean, Patricia Brennan, Baptiste Callendret, Daniel Catropa, Moo-Young Chun, Laird Close, Jeffrey Crane, Daniel Durusky, Jason Eastman, Harland Epps, Ian Evans, Janet DePonte Evans, Thomas Gauron, Vitor Hartmann, Ofir Hershko, Bi Ho Jang, Jeong-Gyun Jang, Ueejeong Jeong, Andres Jordan, Colby Jurgenson, Jan Kansky, Jihun Kim, Sanghyuk Kim, Yunjong Kim, Sungho Lee, Henrique Lupinari, Jared Males, Kenneth McCracken, Michael McQuade, Claudia Mendes de Oliveira, Rafael Millan-Gabet, Mark Mueller, Jae Sok Oh, Cem Onyuksel, Byeong-Gon Park, Sung-Joon Park, Priscila Pires, William Podgorski, Andreas Seifahrt, Matthew Smith, Joao Steiner, Alan Uomoto, Young-Sam Yu, Joseph Zajac, Rafael Brahm

Proceedings Volume 12184, 121841N (2022) https://doi.org/10.1117/12.2629045

KEYWORDS: Telescopes, Spectrographs, Exoplanets, Stars, Optical instrument design, Spectral resolution, Velocity measurements, Sun, Solar system, Oxygen

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Proceedings Article | 29 August 2022 Poster

Design and analysis of the SiC solar telescope for extreme environments

Jihun Kim, Seonghwan Choi, Jeong-Yeol Han, Yunjong Kim, Ji-Hye Baek, Jongyeob Park, Heesu Yang, Sujin Kim, Young-Soo Kim, Jaegun Yoo, Youra Jun, Bi-Ho Jang, Il Kweon Moon, Dohoon Kim, Minkyum Kim, Gwanghui Jeong, Myung Cho

Proceedings Volume 12182, 1218233 (2022) https://doi.org/10.1117/12.2628857

KEYWORDS: Solar telescopes, Optical instrument design, Silicon carbide, Telescopes, Mirrors, Bridges, Off axis mirrors, Light scattering, Tolerancing, Temperature metrology

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Proceedings Article | 26 August 2022 Poster + Paper

Integration and alignment of KASI-deep rolling imaging fast-optics telescope (K-DRIFT) pathfinder for the detection of low surface brightness features: 300 mm off-axis freeform three-mirror system

Yunjong Kim, Dohoon Kim, Seunghyuk Chang, Woowon Byun, Yongseok Lee, Changsu Choi, Chung-Uk Lee, Eon-Chang Sung, Jaewon Yoo, Jae-Woo Kim, Kwang-Il Seon, Sang-Hyun Chun, Young-Beom Jeon, Gayoung Lee, Hyungkwon Lee, Jongwan Ko

Proceedings Volume 12182, 121822F (2022) https://doi.org/10.1117/12.2628847

KEYWORDS: Mirrors, Monochromatic aberrations, Wavefronts, Telescopes, Imaging systems, Optical design, Off axis mirrors, Tolerancing, Confocal microscopy, Zerodur

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Proceedings Article | 10 July 2018 Presentation + Paper

Control modeling of the fast-steering secondary mirror for GMT

Christoph Dribusch, Myung Cho, Youra Jun, Jieun Ryu, Gary Poczulp, Ming Liang, Sungho Lee, Jeong-Yeol Han, Ueejeong Jeong, Sanghyuk Kim, Bong-Kon Moon, Chang-Hee Kim, Yunjong Kim, Chan Park, Byeong-Gon Park, Il-Kwon Moon, Chanhee Lee, Wongi Lee, Ho-Sang Kim, Paul Gardner, Robert Bernier, Frank Groark, Hugo Chiquito

Proceedings Volume 10705, 107050Z (2018) https://doi.org/10.1117/12.2313351

KEYWORDS: Mirrors, Actuators, Telescopes, Secondary tip-tilt mirrors, Motion models, Astronomy, Simulink, Control systems, Piezoelectric drives, Piezoelectric driven mechanisms

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Proceedings Article | 10 July 2018 Paper

Experimental study of breakaway system for the fast-steering secondary mirror prototype of GMT

Yunjong Kim, Wongi Lee, Chanhee Lee, Myung K. Cho, Christoph Dribusch, Sungho Lee, Sanghyuk Kim, Chang-Hee Kim, Ueejeong Jeong, Jeong-Yeol Han, Bong-Kon Moon, Chan Park, Byeong-Gon Park, Youra Jun, Jieun Ryu, Gary Poczulp, Ming Liang, Il-Kwon Moon, Ho-Sang Kim, Paul Gardner, Robert Bernier, Frank Groark, Hugo Chiquito

Proceedings Volume 10706, 107064A (2018) https://doi.org/10.1117/12.2311779

KEYWORDS: Mirrors, Prototyping, Telescopes, Actuators, Earthquakes, Space telescopes, 3D modeling, Astronomy, Large telescopes, Seismic sensors

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Proceedings Article | 10 July 2018 Presentation + Paper

Design of the fast steering secondary mirror assembly for the Giant Magellan Telescope

Myung Cho, Youra Jun, Christoph Dribusch, Jieun Ryu, Gary Poczulp, Ming Liang, Sungho Lee, Jeong-Yeol Han, Ueejeong Jeong, Sanghyuk Kim, Bongkon Moon, Chang-Hee Kim, Yunjong Kim, Chan Park, Byeong-Gon Park, Il-Kwon Moon, Chan-Hee Lee, Wongi Lee, Ho-Sang Kim, Paul Gardner, Robert Bernier, Frank Groark, Hugo Chiquito

Proceedings Volume 10706, 1070607 (2018) https://doi.org/10.1117/12.2313375

KEYWORDS: Mirrors, Telescopes, Actuators, Space telescopes, Off axis mirrors, Integrated modeling, Interfaces, Optical instrument design, Phase transfer function, Control systems

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Proceedings Article | 6 July 2018 Paper

Development status of the fast-steering secondary mirror of GMT

Sungho Lee, Jeong-Yeol Han, Ueejeong Jeong, Sanghyuk Kim, Bong-Kon Moon, Chang-Hee Kim, Yunjong Kim, Chan Park, Byeong-Gon Park, Myung Cho, Christoph Dribusch, Youra Jun, Jieun Ryu, Gary Poczulp, Ming Liang, Il Kweon Moon, Chanhee Lee, Wongi Lee, Ho-Sang Kim, Paul Gardner, Robert Bernier, Frank Groark, Hugo Chiquito

Proceedings Volume 10700, 1070044 (2018) https://doi.org/10.1117/12.2313174

KEYWORDS: Mirrors, Telescopes, Control systems design, Actuators, Control systems, Off axis mirrors

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Proceedings Article | 6 July 2018 Paper

Preliminary AIT plan for the FSM segments of GMT

Jeong-Yeol Han, Sungho Lee, Sanghyuk Kim, Yunjong Kim, Ueejeong Jeong, Myung Cho, Christoph Dribusch, Bong-Kon Moon, Chang-Hee Kim, Chan Park, Byeong-Gon Park, Youra Jun, Jieun Ryu, Gary Poczulp, Ming Liang, Il-Kwon Moon, Chanhee Lee, Wongi Lee, Ho-Sang Kim, Paul Gardner, Robert Bernier, Frank Groark, Hugo Chiquito

Proceedings Volume 10700, 107002D (2018) https://doi.org/10.1117/12.2314292

KEYWORDS: Mirrors, Assembly tolerances, Safety, Integrated optics, Optical testing, Tolerancing

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Proceedings Article | 6 July 2018 Paper

Tip-tilt performance test of FSMP for development of the GMT FSM

Sanghyuk Kim, Chang-Hee Kim, Ueejeong Jeong, Sungho Lee, Won Gi Lee, Chan-Hee Lee, Il-Kwon Moon, Jeong-Yeol Han, Yunjong Kim, Bongkon Moon, Myung Kyu Cho, Byeong-Gon Park, Chan Park, Ho-Sang Kim, Paul Gardner, Robert Bernier, Frank Groark, Hugo Chiquito

Proceedings Volume 10700, 107003P (2018) https://doi.org/10.1117/12.2311774

KEYWORDS: Mirrors, Actuators, Sensors, Secondary tip-tilt mirrors, Prototyping

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Proceedings Article | 6 July 2018 Presentation + Paper

The GMT-consortium large earth finder (G-CLEF): an optical echelle spectrograph for the Giant Magellan Telescope (GMT)

Andrew Szentgyorgyi, Daniel Baldwin, Stuart Barnes, Jacob Bean, Sagi Ben-Ami, Patricia Brennan, Jamie Budynkiewicz, Daniel Catropa, Moo-Young Chun, Charlie Conroy, Adam Contos, Jeffrey Crane, Daniel Durusky, Harland Epps, Ian Evans, Janet Evans, Valery Fishman, Anna Frebel, Thomas Gauron, Dani Guzman, Tyson Hare, Bi-Ho Jang, Jeong-Gyun Jang, Andres Jordan, Jihun Kim, Kang-Min Kim, Yunjong Kim, Sungho Lee, Mercedes Lopez-Morales, Claudia Mendes de Oliveira, Kenneth McCracken, Stuart McMuldroch, Joseph Miller, Mark Mueller, Jae Sok Oh, Cem Onyuksel, Byeong-Gon Park, Chan Park, Sung-Joon Park, Charles Paxson, David Phillips, David Plummer, William Podgorski, Adam Rubin, Andreas Seifahrt, Daniel Stark, Joao Steiner, Alan Uomoto, Ronald Walsworth, Young-Sam Yu

Proceedings Volume 10702, 107021R (2018) https://doi.org/10.1117/12.2313539

KEYWORDS: Spectrographs, Cameras, Calibration, Telescopes, Stars, Optical benches, Thorium

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Proceedings Article | 1 September 2017 Paper

Simulation of realistic images for Starshade missions

Mengya (Mia) Hu, Anthony Harness, Yunjong Kim, N. Jeremy Kasdin, Robert Vanderbei, Maxime Jean Rizzo, Aki Roberge

Proceedings Volume 10400, 104001S (2017) https://doi.org/10.1117/12.2273404

KEYWORDS: Exoplanets, Image processing, Imaging systems, Exoplanetary science, Optical design

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Proceedings Article | 1 September 2017 Presentation + Paper

Modeling and performance predictions for the Princeton Starshade Testbed

Anthony Harness, Stuart Shaklan, Philip Dumont, Yunjong Kim, N. Jeremy Kasdin

Proceedings Volume 10400, 1040019 (2017) https://doi.org/10.1117/12.2275160

KEYWORDS: Performance modeling, Optics manufacturing, Photomasks, Spectroscopy, Exoplanets, Lithography, Edge roughness, Manufacturing, Wavefronts, Optical fabrication

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Proceedings Article | 1 September 2017 Presentation + Paper

Optical demonstration of a starshade at flight Fresnel numbers

Yunjong Kim, Anthony Harness, Dan Sirbu, Mengya Hu, Mike Galvin, N. Jeremy Kasdin, Robert Vanderbei, Stuart Shaklan

Proceedings Volume 10400, 104001A (2017) https://doi.org/10.1117/12.2273287

KEYWORDS: Planets, Exoplanets, Stars, Space operations, Space telescopes, Optical testing, Mathematical modeling, Performance modeling

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Proceedings Article | 29 July 2016 Paper

Experimental study of starshade at flight Fresnel numbers in the laboratory

Yunjong Kim, Dan Sirbu, Michael Galvin, N. Jeremy Kasdin, Robert Vanderbei

Proceedings Volume 9904, 99043G (2016) https://doi.org/10.1117/12.2231112

KEYWORDS: Planets, Exoplanets, Space telescopes, Telescopes, Wavefronts, Cameras, Diffraction, Apodization, Sensors, Performance modeling

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Proceedings Article | 22 July 2016 Paper

Design and construction of a 76m long-travel laser enclosure for a space occulter testbed

Michael Galvin, Yunjong Kim, N. Jeremy Kasdin, Dan Sirbu, Robert Vanderbei, Dan Echeverri, Giuseppe Sagolla, Andreas Rousing, Kunjithapatham Balasubramanian, Daniel Ryan, Stuart Shaklan, Doug Lisman

Proceedings Volume 9912, 99126N (2016) https://doi.org/10.1117/12.2231093

KEYWORDS: Space telescopes, Cameras, Switches, Laser safety, Reflectivity, Stray light, Sensors, Telescopes, Laser systems engineering, Aluminum

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Proceedings Article | 16 September 2015 Paper

Design of a laboratory testbed for external occulters at flight Fresnel numbers

Yunjong Kim, Mike Galvin, N. Jeremy Kasdin, Robert Vanderbei, Dongok Ryu, Ki-Won Kim, Sug-Whan Kim, Dan Sirbu

Proceedings Volume 9605, 960511 (2015) https://doi.org/10.1117/12.2186349

KEYWORDS: Space telescopes, Apodization, Diffraction, Telescopes, Wavefronts, Reflectivity, Exoplanets, Opacity, Collimation, Space operations

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Proceedings Article | 17 October 2012 Paper

Computer-aided alignment method using RMS WFE value as an optimization criterion

Yunjong Kim, Ho-Soon Yang, Yun-Woo Lee

Proceedings Volume 8491, 84910J (2012) https://doi.org/10.1117/12.928896

KEYWORDS: Optical alignment, Mirrors, Optical components, Spherical lenses, Infrared imaging, Infrared telescopes, Optimization (mathematics), Wavefronts, Lenses, Zernike polynomials

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Proceedings Article | 3 September 2010 Paper

Integration of differential wavefront sampling with merit function regression for efficient alignment of three-mirror anastigmat optical system

Eun-Song Oh, Seonghui Kim, Yunjong Kim, Hanshin Lee, Sug-Whan Kim, Ho-Soon Yang

Proceedings Volume 7793, 77930F (2010) https://doi.org/10.1117/12.860767

KEYWORDS: Wavefronts, Optical alignment, Error analysis, Optical design, Mirrors, Tolerancing, Zernike polynomials, Optimization (mathematics), Optical components, Aerospace engineering

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Proceedings Article | 22 August 2009 Paper

Alignment of off-axis optical system with multi mirrors using derivative of Zernike polynomial coefficient

Yunjong Kim, Ho-Soon Yang, Sug-Whan Kim, Yun-Woo Lee

Proceedings Volume 7433, 74330C (2009) https://doi.org/10.1117/12.825826

KEYWORDS: Optical alignment, Wavefronts, Telescopes, Zernike polynomials, Optical components, Error analysis, Mirrors, Interferometry, Device simulation, Off axis mirrors

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Showing 5 of 25 publications

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