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Featured researches published by Tae-Geun Ji.


Astrophysical Journal Supplement Series | 2017

The Infrared Medium-deep Survey. III. Survey of Luminous Quasars at 4.7 ≤ z ≤ 5.4

Yiseul Jeon; Myungshin Im; Dohyeong Kim; Yongjung Kim; Hyunsung David Jun; Soojong Pak; Yoon Chan Taak; Giseon Baek; Changsu Choi; Nahyun Choi; Jueun Hong; Minhee Hyun; Tae-Geun Ji; Marios Karouzos; Duho Kim; Jae-Woo Kim; Ji Hoon Kim; Minjin Kim; Sanghyuk Kim; Hye-In Lee; Seong-Kook Lee; Won-Kee Park; Woojin Park; Yongmin Yoon

We present our first results of the survey for high redshift quasars at


arXiv: Instrumentation and Methods for Astrophysics | 2018

Systems engineering applied to ELT instrumentation: the GMACS case

D. M. Faes; Aline Souza; Cynthia S. Froning; Luke M. Schmidt; Erika Cook; D. L. DePoy; Tae-Geun Ji; Damien Jones; J. L. Marshall; Hye-In Lee; Claudia Mendez de Oliveira; Soojong Pak; Casey Papovich; Travis Prochaska; Rafael A. S. Ribeiro; Keith Taylor; Daiana R. Bortoletto

5 \lesssim {\rm z} \lesssim 5.7


Optical Design and Engineering VII | 2018

Optical design for the Giant Magellan Telescope Multi-object Astronomical and Cosmological Spectrograph (GMACS): design methodology, issues, and trade-offs

Rafael A. S. Ribeiro; Damien Jones; Luke M. Schmidt; Keith Taylor; Erika Cook; D. L. DePoy; D. M. Faes; Cynthia S. Froning; Tae-Geun Ji; Hye-In Lee; J. L. Marshall; Claudia Mendes de Oliveira; Soojong Pak; Casey Papovich; Travis Prochaska; Aline Souza

. The search for quasars in this redshift range has been known to be challenging due to limitations of filter sets used in previous studies. We conducted a quasar survey for two specific redshift ranges, 4.60


Ground-based and Airborne Instrumentation for Astronomy VII | 2018

GMACS: a wide-field, moderate-resolution spectrograph for the Giant Magellan Telescope

Cynthia S. Froning; D. Bortoletto; Luke M. Schmidt; D. L. DePoy; Erika Cook; D. M. Faes; Tae-Geun Ji; Damien Jones; Hye-In Lee; J. L. Marshall; Claudia Mendes de Oliveira; Soojong Pak; Casey Papovich; Travis Prochaska; Rafael A. S. Ribeiro; Aline Souza; Keith Taylor

\leq


Ground-based and Airborne Instrumentation for Astronomy VII | 2018

The optomechanical design of the Giant Magellan telescope multi-object astronomical and cosmological spectrograph (GMACS)

Travis Prochaska; Caron Albert; James Beck; Erika Cook; D. L. DePoy; D. M. Faes; Cynthia S. Froning; Walter Grant; Isaac Gutierrez; Tae-Geun Ji; Damien Jones; Hye-In Lee; J. L. Marshall; Claudia Mendes de Oliveira; Soojong Pak; Casey Papovich; Rafael A. S. Ribeiro; Marcus Sauseda; Luke M. Schmidt; Aline Souza; Keith Taylor; Darius Williams

z


Ground-based and Airborne Instrumentation for Astronomy VII | 2018

Electronics prototypes for the Giant Magellan telescope multi-object astronomical and cosmological spectrograph (GMACS)

Erika Cook; Travis Prochaska; Hye-In Lee; Tae-Geun Ji; Soojong Pak; D. L. DePoy; J. L. Marshall; Luke M. Schmidt; Aline Souza; Keith Taylor; D. M. Faes; Cynthia S. Froning; Damien Jones; Claudia Mendes de Oliveira; Rafael A. S. Ribeiro; Casey Papovich

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Publications of the Astronomical Society of the Pacific | 2016

Development of SED Camera for Quasars in Early Universe (SQUEAN)

Sanghyuk Kim; Yiseul Jeon; Hye-In Lee; Woojin Park; Tae-Geun Ji; Minhee Hyun; Changsu Choi; Myungshin Im; Soojong Pak

5.40 and 5.50


Proceedings of SPIE | 2016

Optomechanical design concept for the Giant Magellan Telescope Multi-object Astronomical and Cosmological Spectrograph (GMACS)

Travis Prochaska; Marcus Sauseda; James Beck; Luke M. Schmidt; Erika Cook; D. L. DePoy; J. L. Marshall; Rafael A. S. Ribeiro; Keith Taylor; Damien Jones; Cynthia S. Froning; Soojong Pak; Claudia Mendes de Oliveira; Casey Papovich; Tae-Geun Ji; Hye-In Lee

\leq


Journal of the Korean Astronomical Society | 2015

A NEW AUTO-GUIDING SYSTEM FOR CQUEAN

Nahyun Choi; Won-Kee Park; Hye-In Lee; Tae-Geun Ji; Yiseul Jeon; Myungshin Im; Soojong Pak

z


한국천문학회보 | 2013

Camera for Quasars in Early Universe

Won-Kee Park; Soojong Pak; Myungshin Im; Changsu Choi; Yiseul Jeon; Seunghyuk Chang; Hyeonju Jeong; Juhee Lim; Eunbin Kim; Nahyun Choi; Hye-In Lee; Sanghyuk Kim; Byeongjoon Jeong; Tae-Geun Ji

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Soojong Pak

Association of Universities for Research in Astronomy

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Myungshin Im

Seoul National University

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Cynthia S. Froning

University of Texas at Austin

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Keith Taylor

California Institute of Technology

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