Dr. Sung-Joon Park Profile

Dr. Sung-Joon Park

Senior Researcher at Korea Astronomy and Space Science Institute

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Author

Publications (19)

Proceedings Article | 18 July 2024 Presentation + Paper

Presentation + Paper

Innovations in the design and construction of the GMT-Consortium Large Earth Finder (G-CLEF), a first-light instrument for the Giant Magellan Telescope (GMT)

Andrew Szentgyorgyi, Sagi Ben-Ami, Jae Sok Oh, Chan Park, Daniel Baldwin, Jacob Bean, Alex Bichkovsky, Patricia Brennan, Daniel Catropa, Chueh-Yi Chou, Moo-Young Chun, Laird Close, Jeffrey Crane, Peter Doherty, Daniel Durusky, Jason Eastman, Harland Epps, Ian Evans, Vitor Hartmann, Ofir Hershko, Bi-Ho Jang, Jeong-Gyun Jang, Ueejeong Jeong, Andres Jordan, Colby Jurgenson, Jan Kansky, Jihun Kim, Kang-Min Kim, Sanghyuk Kim, Yunjong Kim, Sungho Lee, Matthew Leung, Hung-Hsu Ling, Henrique Lupinari, Jared Males, Kenneth McCracken, Claudia Mendes de Oliveira, Rafael Millan-Gabet, Mark Mueller, Heeyoung Oh, Cem Onyuksel, Byeong-Gon Park, Sung-Joon Park, Woojin Park, William Podgorski, Andreas Seifahrt, Matthew Smith, Yahel Sofer-Rimalt, Shiang-Yu Wang, Abigail Unger, Alan Uomoto, Young-Sam Yu

Proceedings Volume 13096, 130960Z (2024) https://doi.org/10.1117/12.3018439

KEYWORDS: Telescopes, Calibration, Spectrographs, Interfaces, Design, Cameras, Optical fibers, Equipment, Echelle gratings, Exoplanets

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Proceedings Article | 29 August 2022 Presentation

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 | 13 July 2018 Paper

Paper

Wide-field multi-object spectroscopy with MANIFEST

Jon Lawrence, Sagi Ben-Ami, David Brown, Rebecca Brown, Scott Case, Timothy Chin, Matthew Colless, Adam Contos, Darren Depoy, Ian Evans, Daniel Faes, Tony Farrell, Peter Gillingham, Michael Goodwin, Sungwook Hong, Narae Hwang, Wong-Seob Jeong, Urs Klauser, Kyler Kuehn, Nuria Lorente, Slavko Mali, Jennifer Marshall, Helen McGregor, Rolf Muller, Rafael Millan-Gabet, Vijay Nichani, Claudia Oliveria, Henrique Ortolan, naveen Pai, Sung-Joon Park, Travis Prochaska, Will Saunders, Luke Schmidt, Aline Souza, Andrew Szentgyorgyi, Lew Waller, Ross Zhelem

Proceedings Volume 10702, 10702A6 (2018) https://doi.org/10.1117/12.2314178

KEYWORDS: Telescopes, Spectrographs, Optical instrument design

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Proceedings Article | 6 July 2018 Presentation + Paper

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 | 6 July 2018 Presentation + Paper

Presentation + Paper

Development of near-infrared imaging spectrometer (NISS) onboard NEXTSat-1

Woong-Seob Jeong, Sung-Joon Park, Bongkon Moon, Dae-Hee Lee, Jeonghyun Pyo, Won-Kee Park, Il-Joong Kim, Youngsik Park, Kyeongyeon Ko, Mingyu Kim, Dukhang Lee, Minjin Kim, Jongwan Ko, Sun Choel Yang, Norihide Takeyama, Goo-Hwan Shin, Jang-Soo Chae, Toshio Matsumoto

Proceedings Volume 10698, 1069822 (2018) https://doi.org/10.1117/12.2312336

KEYWORDS: Space telescopes, Spectroscopy, Calibration, Satellites, Telescopes, Imaging spectroscopy, Astronomy, Infrared backgrounds, Astronomical instrumentation

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Proceedings Article | 6 July 2018 Paper

Paper

Development of optomechanical structure for the NISS onboard NEXTSat-1

Bongkon Moon, Sung-Joon Park, Woong-Seob Jeong, Duk-Hang Lee, Kyeongyeon Ko, Dae-Hee Lee, Youngsik Park, Jeonghyun Pyo, Won-Kee Park, Il-Joong Kim, Mingyu Kim, Minjin Kim, Jongwan Ko, Young Sam Yu, Toshio Matsumoto, Jang-Soo Chae, Goo-Hwan Shin, Norihide Takeyama, Akito Enokuchi

Proceedings Volume 10698, 106984R (2018) https://doi.org/10.1117/12.2311906

KEYWORDS: Satellites, Mirrors, Aluminum, Telescopes, Optical fabrication, Space telescopes, Computer aided design, Assembly tolerances, Lenses, Sensors, Near infrared spectroscopy

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Proceedings Article | 6 July 2018 Paper

Paper

Performance overview of the near infrared detectors in Korean space missions NISS and LIRS

Dae-Hee Lee, Won-Kee Park, Youngsik Park, Jeonghyun Pyo, Bongkon Moon, Woong-Seob Jeong, Sung-Joon Park, Il-Joong Kim, Min-Gyu Kim, Dukhang Lee, Kyeong Yeon Ko, Young-Jun Choi, Haingja Seo, SeungCheol Bang, Mihyun Kim, Young-Ho Kim, Sung-Yong Ko, Hyun-Jin Lee

Proceedings Volume 10698, 106984Q (2018) https://doi.org/10.1117/12.2310056

KEYWORDS: Electronics, Sensors, Digital signal processing, Infrared detectors, Infrared sensors, Near infrared, Infrared spectroscopy

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Proceedings Article | 6 July 2018 Paper

Paper

Development of optical system for the NISS onboard NEXTSat-1

Sung-Joon Park, Bongkon Moon, Woong-Seob Jeong, Min Gyu Kim, Kyeongyeon Ko, Dae-Hee Lee, Jeonghyun Pyo, Won-Kee Park, Il-Joong Kim, Youngsik Park, Duk-Hang Lee, Minjin Kim, Jongwan Ko, Norihide Takeyama, Sun Choel Yang, Toshio Matsumoto, Jang-Soo Chae, Goo-Hwan Shin

Proceedings Volume 10698, 1069848 (2018) https://doi.org/10.1117/12.2313149

KEYWORDS: Mirrors, Spectroscopy, Infrared sensors, Calibration, Satellites

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Proceedings Article | 19 September 2017 Presentation

Presentation

Development of the camera lens system for total solar eclipse observation (Conference Presentation)

Jihun Kim, Seonghwan Choi, Ji-Hye Beck, Jongyeob Park, Su-Chan Bong, Bi-Ho Jang, Heesu Yang, Jinho Kim, Geon-Hee Kim, Kyungsuk Cho, Sung-Joon Park

Proceedings Volume 10401, 104010Q (2017) https://doi.org/10.1117/12.2272190

KEYWORDS: Cameras, Imaging systems, Polarizers, Bandpass filters, CCD cameras, Astronomy, Coronagraphy, Image quality, Optical engineering, Analytical research

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Proceedings Article | 9 August 2016 Paper

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, Moo-Young Chun, Charlie Conroy, Jeffrey Crane, Harland Epps, Ian Evans, Janet Evans, Jeff Foster, Anna Frebel, Thomas Gauron, Dani Guzmán, Tyson Hare, Bi-Ho Jang, Jeong-Gyun Jang, Andres Jordan, Jihun Kim, Kang-Miin Kim, Claudia Mendes Mendes de Oliveira, Mercedes Lopez-Morales, Kenneth McCracken, Stuart McMuldroch, Joseph Miller, Mark Mueller, Jae Sok Oh, Cem Onyuksel, Mark Ordway, Byeong-Gon Park, Chan Park, Sung-Joon Park, Charles Paxson, David Phillips, David Plummer, William Podgorski, Andreas Seifahrt, Daniel Stark, Joao Steiner, Alan Uomoto, Ronald Walsworth, Young-Sam Yu

Proceedings Volume 9908, 990822 (2016) https://doi.org/10.1117/12.2233506

KEYWORDS: Spectrographs, Telescopes, Cameras, Calibration, Lamps, Interfaces, Fiber science, Light sources, Optical design, Mirrors

Read Abstract +

Proceedings Article | 9 August 2016 Paper

Paper

The opto-mechanical design of the GMT-Consortium Large Earth Finder (G-CLEF)

Mark Mueller, Andrew Szentgyorgyi, Daniel Baldwin, Jacob Bean, Sagi Ben-Ami, Patricia Brennan, J. Budynkiewicz, Moo-Yung Chun, Jeffrey Crane, Harland Epps, Ian Evans, Janet Evans, Jeff Foster, Anna Frebel, Thomas Gauron, Alex Glenday, Tyson Hare, Bi-Ho Jang, Jeong-Gyun Jang, Andreas Jordan, Jihun Kim, Kang-Min Kim, Claudia Mendes de Oliveira, Mercedes Lopez-Morales, Kenneth McCracken, Stuart McMuldroch, Joseph Miller, Jae Sok Oh, Cem Onyuksel, Mark Ordway, Chan Park, Sung-Joon Park, Charles Paxson, David Phillips, David Plummer, William Podgorski, Andreas Seifahrt, Joao Steiner, Alan Uomoto, Ronald Walsworth, Young-Sam Yu

Proceedings Volume 9908, 9908A2 (2016) https://doi.org/10.1117/12.2233246

KEYWORDS: Spectrographs, Telescopes, Optical mounts, Space telescopes, Cameras, Calibration, Temperature metrology, Control systems, Mirrors, Optical benches

Read Abstract +

The GMT-Consortium Large Earth Finder (G-CLEF) is a fiber-fed, optical echelle spectrograph selected as the first light instrument for the Giant Magellan Telescope (GMT) now under construction at the Las Campanas Observatory in Chile. G-CLEF has been designed to be a general-purpose echelle spectrograph with precision radial velocity (PRV) capability for exoplanet detection. The radial velocity (RV) precision goal of G-CLEF is 10 cm/sec, necessary for detection of Earth-sized exoplanets. This goal imposes challenging stability requirements on the optical mounts and the overall spectrograph support structures especially when considering the instrument’s operational environment. The accuracy of G-CLEF’s PRV measurements will be influenced by minute changes in temperature and ambient air pressure as well as vibrations and micro gravity-vector variations caused by normal telescope slewing. For these reasons we have chosen to enclose G-CLEF’s spectrograph in a well-insulated, vibration isolated vacuum chamber in a gravity invariant location on GMT’s azimuth platform. Additional design constraints posed by the GMT telescope include: a limited space envelope, a thermal emission ceiling, and a maximum weight allowance. Other factors, such as manufacturability, serviceability, available technology and budget are also significant design drivers. All of the above considerations must be managed while ensuring performance requirements are achieved. In this paper, we discuss the design of G-CLEF’s optical mounts and support structures including the choice of a low coefficient of thermal expansion (CTE) carbon-fiber optical bench to minimize the system’s sensitivity to thermal soaks and gradients. We discuss design choices made to the vacuum chamber geared towards minimize the influence of daily ambient pressure variations on image motion during observation. We discuss the design of G-CLEF’s insulated enclosure and thermal control systems which will maintain the spectrograph at milli-Kelvin level stability while simultaneously limiting thermal emissions into the telescope dome. Also discussed are micro gravity-vector variations caused by normal telescope slewing, their uncorrected influence on image motion, and how they are dealt with in the design. Finally, we discuss G-CLEF’s front-end assembly and fiber-feed system as well as other interface challenges presented by the telescope, enclosure and neighboring instrumentation.

Proceedings Article | 9 August 2016 Paper

Paper

Opto-mechanical design of the G-CLEF flexure control camera system

Jae Sok Oh, Chan Park, Jihun Kim, Kang-Min Kim, Moo-Young Chun, Young Sam Yu, Sungho Lee, Jakyoung Nah, Sung-Joon Park, Andrew Szentgyorgyi, Stuart McMuldroch, Timothy Norton, William Podgorski, Ian Evans, Mark Mueller, Alan Uomoto, Jeffrey Crane, Tyson Hare

Proceedings Volume 9908, 99089M (2016) https://doi.org/10.1117/12.2232147

KEYWORDS: Cameras, Mirrors, Telescopes, Sensors, Lenses, Collimators, Space telescopes, CCD cameras, Optical filters, Prisms

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Proceedings Article | 29 July 2016 Paper

Paper

Near-infrared imaging spectrometer onboard NEXTSat-1

Woong-Seob Jeong, Sung-Joon Park, Bongkon Moon, Dae-Hee Lee, Jeonghyun Pyo, Won-Kee Park, Youngsik Park, Il-Joong Kim, Kyeongyeon Ko, Dukhang Lee, Min Gyu Kim, Minjin Kim, Jongwan Ko, Goo-Hwan Shin, Jangsoo Chae, Toshio Matsumoto

Proceedings Volume 9904, 990459 (2016) https://doi.org/10.1117/12.2232924

KEYWORDS: Space telescopes, Spectroscopy, Infrared telescopes, Stars, Satellites, Digital signal processing, Telescopes, Infrared imaging, Infrared radiation, Astronomy

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Proceedings Article | 22 July 2016 Paper

Paper

Advanced structural design for precision radial velocity instruments

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

Proceedings Volume 9912, 99123I (2016) https://doi.org/10.1117/12.2235250

KEYWORDS: Optical benches, Spectrographs, Optical design, Composites, Telescopes, Structural design, Finite element methods, Thermography, Sensors, Optical components

Read Abstract +

The GMT-Consortium Large Earth Finder (G-CLEF) is an echelle spectrograph with precision radial velocity (PRV) capability that will be a first light instrument for the Giant Magellan Telescope (GMT). G-CLEF has a PRV precision goal of 40 cm/sec (10 cm/s for multiple measurements) to enable detection of Earth-like exoplanets in the habitable zones of sun-like stars¹. This precision is a primary driver of G-CLEF’s structural design. Extreme stability is necessary to minimize image motions at the CCD detectors. Minute changes in temperature, pressure, and acceleration environments cause structural deformations, inducing image motions which degrade PRV precision. The instrument’s structural design will ensure that the PRV goal is achieved under the environments G-CLEF will be subjected to as installed on the GMT azimuth platform, including:

Millikelvin (0.001 °K) thermal soaks and gradients

10 millibar changes in ambient pressure

Changes in acceleration due to instrument tip/tilt and telescope slewing Carbon fiber/cyanate composite was selected for the optical bench structure in order to meet performance goals. Low coefficient of thermal expansion (CTE) and high stiffness-to-weight are key features of the composite optical bench design. Manufacturability and serviceability of the instrument are also drivers of the design.

In this paper, we discuss analyses leading to technical choices made to minimize G-CLEF’s sensitivity to changing environments. Finite element analysis (FEA) and image motion sensitivity studies were conducted to determine PRV performance under operational environments. We discuss the design of the optical bench structure to optimize stiffness-to-weight and minimize deformations due to inertial and pressure effects. We also discuss quasi-kinematic mounting of optical elements and assemblies, and optimization of these to ensure minimal image motion under thermal, pressure, and inertial loads expected during PRV observations.

Proceedings Article | 28 July 2014 Paper

Paper

A preliminary design for the GMT-Consortium Large Earth Finder (G-CLEF)

Andrew Szentgyorgyi, Stuart Barnes, Jacob Bean, Bruce Bigelow, Antonin Bouchez, Moo-Young Chun, Jeffrey Crane, Harland Epps, Ian Evans, Janet Evans, Anna Frebel, Gabor Furesz, Alex Glenday, Dani Guzman, Tyson Hare, Bi-Ho Jang, Jeong-Gyun Jang, Ueejong Jeong, Andres Jordan, Kang-Min Kim, Jihun Kim, Chih-Hao Li, Mercedes Lopez-Morales, Kenneth McCracken, Brian McLeod, Mark Mueller, Jakyung Nah, Timothy Norton, Heeyoung Oh, Jae Sok Oh, Mark Ordway, Byeong-Gon Park, Chan Park, Sung-Joon Park, David Phillips, David Plummer, William Podgorski, Florian Rodler, Andreas Seifahrt, Kyung-Mo Tak, Alan Uomoto, Marcos Van Dam, Ronald Walsworth, Young Sam Yu, In-Soo Yuk

Proceedings Volume 9147, 914726 (2014) https://doi.org/10.1117/12.2056741

KEYWORDS: Spectrographs, Telescopes, Stars, Mirrors, Calibration, Exoplanets, Adaptive optics, Cameras, Interfaces, Optical design

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Proceedings Article | 26 September 2013 Paper

Paper

Conceptual opto-mechanical design of a NIR imaging spectrometer for the Korean NEXTSat-1 mission

Bongkon Moon, Kwijong Park, Sung-Joon Park, Woong-Seob Jeong, Dae-Hee Lee, Youngsik Park, Uk-Won Nam, Wonyong Han, Jeonghyun Pyo, Wonki Park, Il-Joong Kim, Duk-Hang Lee, Jang-Soo Chae, Goo-Hwan Shin, Norihide Takeyama, Akito Enokuchi

Proceedings Volume 8860, 886010 (2013) https://doi.org/10.1117/12.2024796

KEYWORDS: Sensors, Mirrors, Space telescopes, Optomechanical design, Spectroscopy, Satellites, Telescopes, Imaging spectroscopy, Near infrared, Lenses

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Proceedings Article | 10 August 2010 Paper

Paper

Optical design and performance of MIRIS near-infrared camera

Chang Hee Ree, Sung-Joon Park, Bongkon Moon, Sang-Mok Cha, Youngsik Park, Woong-Seob Jeong, Dae-Hee Lee, Uk-Won Nam, Jang-Hyun Park, Nung Hyun Ka, Mi Hyun Lee, Jeonghyun Pyo, Duk-Hang Lee, Seung-Woo Rhee, Jong-Oh Park, Hyung Mok Lee, Toshio Matsumoto, Sun Choel Yang, Wonyong Han

Proceedings Volume 7731, 77311X (2010) https://doi.org/10.1117/12.856358

KEYWORDS: Optical design, Cameras, Imaging systems, Telescopes, Infrared imaging, Space telescopes, Optomechanical design, Thermal effects, Lenses, Aspheric lenses

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Proceedings Article | 6 August 2010 Paper

Paper

System design of the compact IR space imaging system MIRIS

Wonyong Han, Dae-Hee Lee, Youngsik Park, Woong-Seob Jeong, Chang-Hee Ree, Bongkon Moon, Sang-Mok Cha, Sung-Joon Park, Jang-Hyun Park, Uk-Won Nam, Nung Hyun Ka, Mi Hyun Lee, Jeonghyun Pyo, Kwang-Il Seon, Duk-Hang Lee, Sun Choel Yang, Seung-Woo Rhee, Jong-Oh Park, Hyung Mok Lee, Toshio Matsumoto

Proceedings Volume 7731, 77311W (2010) https://doi.org/10.1117/12.856354

KEYWORDS: Space telescopes, Telescopes, Imaging systems, Optical filters, Digital signal processing, Infrared imaging, Protactinium, Astronomy, Infrared radiation, Infrared sensors

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Proceedings Article | 6 August 2010 Paper

Paper

Development of mechanical structure for the compact space IR camera MIRIS

Bongkon Moon, Woong-Seob Jeong, Sang-Mok Cha, Youngsik Park, Chang-Hee Ree, Dae-Hee Lee, Sung-Joon Park, Uk-Won Nam, Jang-Hyun Park, Nung Hyun Ka, Mi Hyun Lee, Duk-Hang Lee, Jeonghyun Pyo, Seung-Woo Rhee, Jong-Oh Park, Hyung-Mok Lee, Toshio Matsumoto, Sun Choel Yang, Wonyong Han

Proceedings Volume 7731, 77311Y (2010) https://doi.org/10.1117/12.856364

KEYWORDS: Space telescopes, Telescopes, Sensors, Infrared cameras, Satellites, Cameras, Space operations, Thermal analysis, Optical filters, Device simulation

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Showing 5 of 19 publications

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