Mr. Hojae Ahn Profile

Hojae Ahn

at Kyung Hee Univ School of Space Research

SPIE Involvement:

Author

Publications (10)

Proceedings Article | 18 July 2024 Presentation + Paper

The SDSS-V Local Volume Mapper Instrument

Nicholas Konidaris, Thomas Herbst, Cynthia Froning, Stefanie Wachter, Solange Ramírez, Juna Kollmeier, Hans-Walter Rix, Niv Drory, Guillermo Blanc, Jose Sánchez-Gallego, Carlos Godoy Alfaro, Hojae Ahn, Leon Aslan, Felipe Besser, Pavan Bilgi, Peter Bizenberger, Dmitry Bizyaev, Julia Brady, Rebecca Brown, Florian Briegel, Mauricio Flores Cabrales, Scott Case, John Donor, Tobias Feger, Wolfgang Gaessler, Maximilian Häberle, Ellen Houston, Charlie Hull, Amy Jones, Changgon Kim, Vince Kowal, Yevgen Kripak, Kathryn Kreckel, Markus Kuhlberg, Alicia Lanz, Michael Lesser, Richard Mathar, Lars Mohr, Francisco Morales, Soojong Pak, Povilas Palunas, Richard Pogge, Christopher Ritz, David Robertson, Marcelo Rodriguez, Ralf-Rainer Rohloff, Alan Uomoto, Ming Yeong, Abner Zapata, Ross Zhelem

Proceedings Volume 13096, 130961Z (2024) https://doi.org/10.1117/12.3019892

KEYWORDS: Spectrographs, Telescopes, Cryostats, Observatories, Equipment, Lens arrays, Image quality, Mirrors, Lanthanum, Charge-coupled devices

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Proceedings Article | 15 May 2024 Paper

Optical design of a mode matching telescope for quantum-entangled beams in an EPR squeezer

Hojae Ahn, Seunghyuk Chang, Sumin Lee, Soojong Pak, Chang-Hee Kim, Yunjong Kim, Sungho Lee, Sibilla di Pace, Valeria Sequino, Martina de Laurentis, Francesco de Marco, Fiodor Sorrentino

Proceedings Volume 12798, 1279835 (2024) https://doi.org/10.1117/12.2692566

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SPIE Journal Paper | 4 January 2024

Maunakea Spectroscopic Explorer exposure time calculator for end-to-end simulator: to optimizing spectrograph design and observing simulation

Tae-Geun Ji, Jennifer Sobeck, Changgon Kim, Hojae Ahn, Mingyeong Yang, Taeeun Kim, Sungwook E. Hong, Kei Szeto, Jennifer L. Marshall, Christian Surace, Soojong Pak

JATIS, Vol. 10, Issue 01, 018001, (January 2024) https://doi.org/10.1117/12.10.1117/1.JATIS.10.1.018001

KEYWORDS: Equipment, Spectroscopy, Spectral resolution, Spectrographs, Lawrencium, Telescopes, Design, Software development, Near infrared, Device simulation

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SPIE Journal Paper | 6 September 2023

Automatic spectrograph control software for SDSS-V Local Volume Mapper

Changgon Kim, José Sánchez-Gallego, Pavan Bilgi, Mingyeong Yang, Florian Briegel, Tae-Geun Ji, Nicholas P. Konidaris, Taeeun Kim, Hojae Ahn, Mingyu Jeon, Hyun Chul Park, Hye-In Lee, Cynthia S. Froning, Solange Ramirez, Niv Drory, Juna A. Kollmeier, Soojong Pak

JATIS, Vol. 9, Issue 03, 037002, (September 2023) https://doi.org/10.1117/12.10.1117/1.JATIS.9.3.037002

KEYWORDS: Spectrographs, Control software, Software development, Charge-coupled devices, Camera shutters, Design and modelling, Control systems, Computer architecture, Data acquisition, Switches

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Proceedings Article | 29 August 2022 Presentation + Paper

The Sloan Digital Sky Survey cyberinfrastructure

José Sánchez-Gallego, Brian Cherinka, Joel Brownstein, John Donor, Conor Sayres, Hojae Ann, Changgon Kim, Juna Kollmeier, Nick Konidaris, Soojong Pak, Solange Ramírez, Shane Thomas, Stefanie Wachter, Mingyeong Yang, Lionel Zumarán

Proceedings Volume 12189, 1218906 (2022) https://doi.org/10.1117/12.2629714

KEYWORDS: Software development, Observatories, Telescopes, Human-machine interfaces, Databases, Galactic astronomy, Astronomy, Data archive systems, Computer programming, Telecommunications

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Proceedings Article | 29 August 2022 Poster + Paper

LVMAGP: SDSS-V local volume mapper acquisition and guiding package

Hojae Ahn, Florian Briegel, Mingyu Jeon, Tom Herbst, Sumin Lee, Inhwan Jung, Changgon Kim, Jimin Han, Geon Hee Kim, Wolfgang Gaessler, Markus Kuhlberg, Tae-Geun Ji, Hyun Chul Park, Soojong Pak, Nicholas P. Konidaris, Niv Drory, José Sanchez-Gallego, Cynthia S. Froning, Solange Ramirez, Juna A. Kollmeier

Proceedings Volume 12189, 121892E (2022) https://doi.org/10.1117/12.2628000

KEYWORDS: Telescopes, Cameras, Mirrors, Device simulation, Control systems, Astronomy, Computer programming, Target acquisition, Sensors

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Proceedings Article | 29 August 2022 Poster + Paper

LVMECP: SDSS-V Local Volume Mapper Enclosure Control Package

Mingyeong Yang, Felipe Besser, José Sánchez-Gallego, Gyoik Kim, Changgon Kim, Hojae Ahn, Tae-Geun Ji, Nicholas P. Konidaris, Guillermo A. Blanc, Erika Cook, Cynthia S. Froning, Solange Ramirez, Niv Drory, Juna A. Kollmeier

Proceedings Volume 12189, 121892D (2022) https://doi.org/10.1117/12.2627651

KEYWORDS: Control systems, Telecommunications, Telescopes, Domes, Logic, Software development, Observatories, Computer programming

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Proceedings Article | 29 August 2022 Poster + Presentation + Paper

Development of the spectrograph control software package for SDSS-Ⅴ Local Volume Mapper Instrument

Changgon Kim, José Sanchez-Gallego, Pavan Bilgi, Mingyeong Yang, Florian Briegel, Tae-Geun Ji, Nicholas P. Konidaris, Taeeun Kim, Hojae Ahn, Mingyu Jeon, Hyun Chul Park, Hye-In Lee, Cynthia S. Froning, Solange Ramirez, Niv Drory, Juna A. Kollmeier, Soojong Pak

Proceedings Volume 12189, 121890Z (2022) https://doi.org/10.1117/12.2627584

KEYWORDS: Spectrographs, Software development, Charge-coupled devices, Astronomy, Control systems, Camera shutters, Transducers, Galactic astronomy, Data acquisition, Computer architecture

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Proceedings Article | 29 August 2022 Poster + Paper

An exposure time calculator for the Maunakea Spectroscopic Explorer

Tae-Geun Ji, Taeeun Kim, Changgon Kim, Hojae Ahn, Mingyeong Yang, Soojong Pak, Sungwook E. Hong, Jennifer E. Sobeck, Kei Szeto, Jennifer L. Marshall, Christian Surace

Proceedings Volume 12189, 121892N (2022) https://doi.org/10.1117/12.2629101

KEYWORDS: Spectral resolution, Signal to noise ratio, Spectroscopy, Optical fibers, Spectrographs, Data modeling, Telescopes, Software development, Lawrencium, Astronomy

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Proceedings Article | 20 September 2020 Poster + Presentation + Paper

Tolerance analysis of wide field of view confocal off-axis telescope system using freeform mirrors for common optics MWIR/LWIR sensors onboard UAVs: linear astigmatism free three mirror system D70F1.4

Jimin Han, Woojin Park, Seunghyuk Chang, Sunwoo Lee, Hojae Ahn, Dae Wook Kim, Geon Hee Kim, Dae-Hee Lee, Hanshin Lee, Soojong Pak

Proceedings Volume 11537, 115370R (2020) https://doi.org/10.1117/12.2573698

KEYWORDS: Tolerancing, Mirrors, Off axis mirrors, Telescopes, Monochromatic aberrations, Confocal microscopy, Sensors, Freeform optics, Unmanned aerial vehicles, Infrared telescopes

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Showing 5 of 10 publications

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