• Title/Summary/Keyword: Stratospheric balloon

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Cost-Effective High-Altitude Scientific Balloon Development and its Flight Test (비용효율적인 고고도 과학기구 개발 및 비행시험)

  • Kang, Jungpyo;Shim, Gyujin;Kim, Hweeho;Lee, Yongseon;Yee, Kwanjung
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.46 no.4
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    • pp.345-358
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    • 2018
  • The high altitude scientific balloon has been used for decades in advanced aerospace countries such as United States, France, and Japan to carry out various research objectives. Since the initial cost for development and operation is enormous, it has been conducted by national research institutes. Recently, the advent of open source software/hardware ecosystems with low-cost yet high-performance have lowered barriers to enter into scientific balloon research and development. In this study, a zero pressure balloon prototype was designed considering the cost, usability, compatibility, and development period by using commercial off the shelf (COTS) items. In addition, the flight operation experience was accumulated through eight times of the flight tests, and operational reliability of the balloon system was verified. Finally, the foundation for the operation of the large zero pressure balloon was established.

The Observation of Ozone Vertical Profile in Yongin, Korea During the GMAP 2021 Field Campaign (GMAP 2021 캠페인 기간 용인지역 오존 연직 분포 관측)

  • Ryu, Hosun;Koo, Ja-Ho;Kim, Hyeong-Gyu;Lee, Nahyun;Lee, Won-Jin;Kim, Joowan
    • Atmosphere
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    • v.32 no.3
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    • pp.247-261
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    • 2022
  • The importance of ozone monitoring has been growing due to the polar ozone depletion and increasing tropospheric ozone concentration over many Asian countries, including South Korea. In-situ measurement of the vertical ozone structure has advantages for ozone research, but observations are not sufficient. In this study, ozonesonde measurements were performed from October to November in Yongin during the GMAP (The GEMS Map of Air Pollution) 2021 campaign. The procedure for ozonesonde preparation and initial analysis of the observed ozone profile are documented. The observed ozone concentrations are in good agreement with previous studies in the troposphere, and they capture the stratospheric ozone distribution as well, including stratosphere-troposphere exchange event. These balloon-borne in situ measurements can contribute to the evaluation of remote sensing measurements such as Geostationary Environment Monitoring Spectrometer (GEMS). This document focuses on providing essential information of ozonesonde preparation and measurement for domestic researchers.

SUNRISE: The Mission and Selected Science Results

  • Solanki, Sami K.;the Sunrise Team, the Sunrise Team
    • The Bulletin of The Korean Astronomical Society
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    • v.36 no.2
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    • pp.85.1-85.1
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    • 2011
  • The magnetic field at the surface of the Sun is concentrated in magnetic features that often have spatial extents of 100 km or less. The study of the fine scale structure of the Sun's magnetic field has been hampered by the limited spatial resolution of the available observations. This has recently changed thanks to various new high-resolution facilities, among them the SUNRISE observatory, built around the largest solar telescope to leave the ground, and containing two science instruments. SUNRISE successfully had its first long-duration science flight on a stratospheric balloon in June 2009 and a host of scientific results have been obtained from the data. After a brief introduction to the Sunrise mission, an overview of selected results obtained so far will be given. A reflight at higher solar activity is currently being prepared.

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Development of a diagnostic coronagraph on the ISS: progress report

  • Kim, Yeon-Han;Choi, Seonghwan;Bong, Su-Chan;Cho, Kyungsuk;Park, Young-Deuk;Newmark, Jeffrey;Gopalswamy, Nat.;Yashiro, Seiji;Reginald, Nelson
    • The Bulletin of The Korean Astronomical Society
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    • v.44 no.1
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    • pp.51.1-51.1
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    • 2019
  • The Korea Astronomy and Space Science Institute (KASI) has been developing a coronagraph in collaboration with the National Aeronautics and Space Administration (NASA), to install it on the International Space Station (ISS). The coronagraph will utilize spectral information to simultaneously measure electron density, temperature, and velocity. For this, we develop the coronagraph as a two-step process. First, we will perform a stratospheric balloon-borne experiment, so called BITSE, in 2019 with a new type of coronagraph. Second, the coronagraph will be installed and operate on the ISS (CODEX) in 2021 to address a number of questions (e.g., source and acceleration of solar wind, and coronal heating) that are both fundamental and practically important in the physics of the solar corona and of the heliosphere. In this presentation, we will introduce recent progresses.

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Development of a diagnostic coronagraph on the ISS: BITSE overview and progress report

  • Kim, Yeon-Han;Choi, Seonghwan;Bong, Su-Chan;Cho, Kyungsuk;Park, Young-Deuk;Newmark, Jeffrey;Gopalswamy, Nat.;Yashiro, Seiji;Reginald, Nelson
    • The Bulletin of The Korean Astronomical Society
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    • v.44 no.2
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    • pp.56.4-56.4
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    • 2019
  • The Korea Astronomy and Space Science Institute (KASI) has been collaborating with the NASA's Goddard Space Flight Center, to install a coronagraph on the International Space Station (ISS). The coronagraph will utilize spectral information to simultaneously measure electron density, temperature, and velocity. As a first step, we developed a new coronagraph and launched it on a stratospheric balloon in 2019 (BITSE) from Fort Sumner, New Mexico in USA. As the next step, the coronagraph will be be further developed, installed and operate on the ISS (CODEX) in 2022 to address a number of important questions (e.g., source and acceleration of solar wind, and coronal heating) in the physics of the solar corona and the heliosphere. Recently, BITSE has been launched at Fort Sumner, New Mexico. In this presentation, we will introduce the BITSE mission and discuss recent progress.

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Development of a diagnostic coronagraph on the ISS: progress report

  • Kim, Yeon-Han;Choi, Seonghwan;Bong, Su-Chan;Cho, Kyungsuk;Park, Young-Deuk;Newmark, Jeffrey;Gopalswamy, Nat.;Yashiro, Seiji;Reginald, Nelson
    • The Bulletin of The Korean Astronomical Society
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    • v.45 no.1
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    • pp.44.2-44.2
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    • 2020
  • The Korea Astronomy and Space Science Institute (KASI) has been collaborating with the NASA Goddard Space Flight Center (GSFC), to install a diagnostic coronagraph on the International Space Station (ISS). The coronagraph is designed to obtain simultaneous measurements of electron density, temperature, and velocity using multiple filters in the 3-10 Rs range. In 2019, we developed a new coronagraph and launched it on a stratospheric balloon (BITSE) from Fort Sumner, New Mexico in USA. As the next step, the coronagraph will be further developed, installed and operated on the ISS (CODEX) in 2023 to understand the physical conditions in the solar wind acceleration region, and enable and validate the next generation space weather models. In this presentation, we will report recent progress and introduce future plan.

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TOWARD NEXT GENERATION SOLAR CORONAGRAPH: DEVELOPMENT OF COMPACT DIAGNOSTIC CORONAGRAPH ON ISS

  • Cho, Kyungsuk;Bong, Suchan;Choi, Seonghwan;Yang, Heesu;Kim, Jihun;Baek, Jihye;Park, Jongyeob;Lim, Eun-Kyung;Kim, Rok-Soon;Kim, Sujin;Kim, Yeon-Han;Park, Young-Deuk;Clarke, S.W.;Davila, J.M.;Gopalswamy, N.;Nakariakov, V.M.;Li, B.;Pinto, R.F.
    • The Bulletin of The Korean Astronomical Society
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    • v.42 no.2
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    • pp.66.2-66.2
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    • 2017
  • The Korea Astronomy and Space Science Institute plans to develop a coronagraph in collaboration with National Aeronautics and Space Administrative (NASA) and install it on the International Space Station (ISS). The coronagraph is an externally occulted one stage coronagraph with a field of view from 2.5 to 15 solar radii. The observation wavelength is approximately 400 nm where strong Fraunhofer absorption lines from the photosphere are scattered by coronal electrons. Photometric filter observation around this band enables the estimation of 2D electron temperature and electron velocity distribution in the corona. Together with the high time cadence (< 12 min) of corona images to determine the geometric and kinematic parameters of coronal mass ejections, the coronagraph will yield the spatial distribution of electron density by measuring the polarized brightness. For the purpose of technical demonstration, we intend to observe the total solar eclipse in 2017 August for the filter system and to perform a stratospheric balloon experiment in 2019 for the engineering model of the coronagraph. The coronagraph is planned to be installed on the ISS in 2021 for addressing a number of questions (e.g. coronal heating and solar wind acceleration) that are both fundamental and practically important in the physics of the solar corona and of the heliosphere.

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TOWARD A NEXT GENERATION SOLAR CORONAGRAPH: DEVELOPMENT OF A COMPACT DIAGNOSTIC CORONAGRAPH FOR THE ISS

  • Cho, K.S.;Bong, S.C.;Choi, S.;Yang, H.;Kim, J.;Baek, J.H.;Park, J.;Lim, E.K.;Kim, R.S.;Kim, S.;Kim, Y.H.;Park, Y.D.;Clarke, S.W.;Davila, J.M.;Gopalswamy, N.;Nakariakov, V.M.;Li, B.;Pinto, R.F.
    • Journal of The Korean Astronomical Society
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    • v.50 no.5
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    • pp.139-149
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    • 2017
  • The Korea Astronomy and Space Science Institute plans to develop a coronagraph in collaboration with National Aeronautics and Space Administration (NASA) and to install it on the International Space Station (ISS). The coronagraph is an externally occulted one-stage coronagraph with a field of view from 3 to 15 solar radii. The observation wavelength is approximately 400 nm, where strong Fraunhofer absorption lines from the photosphere experience thermal broadening and Doppler shift through scattering by coronal electrons. Photometric filter observations around this band enable the estimation of 2D electron temperature and electron velocity distribution in the corona. Together with a high time cadence (<12 min) of corona images used to determine the geometric and kinematic parameters of coronal mass ejections, the coronagraph will yield the spatial distribution of electron density by measuring the polarized brightness. For the purpose of technical demonstration, we intend to observe the total solar eclipse in August 2017 with the filter system and to perform a stratospheric balloon experiment in 2019 with the engineering model of the coronagraph. The coronagraph is planned to be installed on the ISS in 2021 for addressing a number of questions (e.g., coronal heating and solar wind acceleration) that are both fundamental and practically important in the physics of the solar corona and of the heliosphere.