クレジット・ライセンス
ほしぞらドームは、次のデータとソフトウェアを利用しています。地面の景色・画面のデザインはオリジナルです。星座絵は Stellarium のイラスト（Johan Meuris ほか、Free Art License 1.3）を使っています。
天体データ
- 星・星座線・星名・天の川・メシエ天体のデータ：d3-celestial（© 2015 Olaf Frohn・BSD-3-Clause）を変換・圧縮して使用
- 恒星の位置と明るさ：XHIP: An Extended Hipparcos Compilation（Anderson & Francis 2012）
- 星名の訳：Stellarium skycultures／星座名：国際天文学連合（IAU）
- 月の表面：Celestia の月面マップ（NASA LRO の観測データと NASA CGI Moon Kit から作成・GPL-2.0）を球面に投影して使用
- 星座絵：Stellarium の星座イラスト（Johan Meuris ほか・Free Art License 1.3）。輪郭と描線だけの線画に加工し、星の位置に合わせて配置しています（加工した画像も同じライセンスです）
- 天の川の輪郭：Milky Way Outline Catalog（Jose R. Vieira）
- メシエ天体：Messier Objects with Data（H. Frommert／SEDS）
- 惑星の位置：Keplerian Elements for Approximate Positions of the Major Planets（NASA JPL）
- ISS・スターリンク衛星の軌道要素：CelesTrak、wheretheiss.at（取得できた場合）
- 星までの距離（光の誕生日星）：HYG Database（David Nash・CC BY-SA 4.0）をもとに作成
- 天気データ（星空指数）：Open-Meteo（CC BY 4.0）
地図データ
月・火星の地図（月めぐり・火星めぐり）
- 月の地図のもとにしたデータ：NASA Goddard Space Flight Center Scientific Visualization Studio「CGI Moon Kit」（LRO LROC・LOLA、パブリックドメイン）
- 火星の地図のもとにしたデータ：USGS Astrogeology「Mars Viking Colorized Global Mosaic」「Mars MGS MOLA DEM」（パブリックドメイン）
- 月面ジャンプの地形は再現イメージです。地球の画像：NASA Blue Marble・Black Marble（パブリックドメイン）
音声
- 音声ガイド（春・夏・秋・冬の星座ツアー）のナレーション：VOICEVOX:青山龍星（VOICEVOXの利用規約にしたがって使用）
- 「読み上げ」ボタンの音声：お使いの端末・ブラウザに入っている音声合成を使用
ソフトウェア・フォント
- three.js（© 2010-2021 three.js authors・MIT）
- satellite.js（© 2013 Shashwat Kandadai, UCSC Jack Baskin School of Engineering・MIT）
- pako（© 2014-2017 Vitaly Puzrin, Andrei Tuputcyn・MIT、古いブラウザでのみ使用）
- フォント：Zen Kaku Gothic New、Shippori Mincho B1、IBM Plex Mono（SIL Open Font License 1.1・Google Fonts）
ライセンス全文
d3-celestial（BSD-3-Clause）
Copyright (c) 2015, Olaf Frohn
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
world-atlas（ISC）
Copyright 2013-2019 Michael Bostock
Permission to use, copy, modify, and/or distribute this software for any purpose
with or without fee is hereby granted, provided that the above copyright notice
and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
THIS SOFTWARE.
three.js（MIT）
The MIT License
Copyright © 2010-2021 three.js authors
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
satellite.js（MIT）
MIT License
Copyright (C) 2013 Shashwat Kandadai, UCSC Jack Baskin School of Engineering
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
pako（MIT）
(The MIT License)
Copyright (C) 2014-2017 by Vitaly Puzrin and Andrei Tuputcyn
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.