@misc{oai:jaxa.repo.nii.ac.jp:00049216,
 author = {堀内, 貴史 and 花山, 秀和 and 大石, 雅寿 and OISTER, collaboration and HORIUCHI, Takashi and HANAYAMA, Hidekazu and OHISHI, Masatoshi and OISTER, collaboration},
 month = {Feb},
 note = {第10回スペースデブリワークショップ (2022年11月28-30日. 主催: 宇宙航空研究開発機構研究開発部門(JAXA), 宇宙航空研究開発機構調布航空宇宙センター(JAXA)(CAC)), 調布市, 東京, The 10th Space Debris Workshop (November 28-30, 2022. Organizer: Research and Development Directorate, Japan Aerospace Exploration Agency (JAXA), Chofu Aerospace Center, Japan Aerospace Exploration Agency (JAXA)(CAC)), Chofu, Tokyo, Japan, SpaceX は高速インターネット通信サービスの充実を目的として2019 年5 月に60 機のStarlink 衛星を低軌道(550km)に打ち上げ, 将来的に12,000 機に達する予定である. 一方で, Starlink 衛星は低軌道ゆえに太陽の反射光が明るく見えて, 地上観測に多大な影響を残すことが示唆されている. 近年, SpaceX は太陽光入射を遮り反射を抑えるため, 衛星本体に庇を装着したバイザーサット(Visorsat)を複数開発し2020 年6 月に打ち上げた. 我々は紫外から近赤外の領域でVisorsat と庇のない通常のスターリンク衛星の一つ(STARLINK-1113)の等級の比較を行うべく, 光・赤外大学間連携(OISTER)による連携観測を実施した. 結果として, 各波長でVisorsat(7 等程)は1 等級程度STARLINK-1113(6 等程)より暗くなり庇の効果を実証することができた. 一方で, 地上観測への影響は未だに無視できず, 更なる反射逓減対策が必要である., SpaceX launched 60 Starlink satellites into low orbit (550 km) in May 2019 for the purpose of enhancing high-speed Internet communication services, reaching 12,000 satellites in the future. On the other hand, it has been suggested that sunlight reflection from the Starlink satellites strongly shows a significant impact on ground-based observations due to their low orbit. In recent years, SpaceX has developed Visorsat, which are equipped with a sun visor on the main body of the satellite to block the incoming sunlight and suppress the reflection, and its first satellite was launched in June 2020. We conducted cooperative observations by optical and infrared synergetic telescopes for education and research (OISTER) to compare the magnitudes of Visorsat and one of the ordinary Starlink satellites without the sun visor (STARLINK-1113) in the UV to near-infrared region. As a result, Visorsat (~ 7 mag) is fainter than STARLINK-1113 (~ 6 mag) by about 1 mag at each wavelength region, demonstrating a shading effect of the sun visor. On the other hand, the effect of Visorsat on ground-based observations is still not negligible, and further measurements for dimming of reflections are needed., 著者の誤記: OISER collaboration, 形態: カラー図版あり, The clerical error of author: OISER collaboration, Physical characteristics: Original contains color illustrations, 資料番号: AA2230027025},
 title = {Magnitude Estimation of Starlink's Visorsat by the OISTER Collaboration},
 year = {2023}
}