Center for Science Satellite Operation and Data Archive, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)(C-SODA)
Center for Science Satellite Operation and Data Archive, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)(C-SODA)
Center for Science Satellite Operation and Data Archive, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)(C-SODA)
Misato Observatory : Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)
出版者
宇宙航空研究開発機構(JAXA)
出版者（英）
Japan Aerospace Exploration Agency (JAXA)
雑誌名
宇宙航空研究開発機構研究開発報告: 宇宙科学情報解析論文誌: 第4号
雑誌名(英)
JAXA Research and Development Report: Journal of Space Science Informatics Japan: Volume 4
DARTS (http://darts.jaxa.jp/) is a scientific data archive system which provides data of scientific satellites launched by JAXA, and is developed and maintained by Center for Science-satellite Operation and Data Archive (C-SODA) in ISAS/JAXA. We have developed a web interface with search function to provide 2 dimensional image data (all-sky map) obtained from all sky survey observation of infrared astronomy satellite “AKARI”. The all-sky map is composed of many image files which are arranged like as tiles to cover whole celestial sphere and each image occupies a region about several square degrees. This search function is intended to return all image files in the region designated by a user, if they are overlapped with the region. To realize such a search, we adopt a method that each image is divided into a large number of small rectangular areas and then the center of each area is represented by an orthogonal coordinate system to register in the database. This method has the advantages that other external libraries to divide the celestial area such as HEALPix are not needed, and that both celestial poles is not treated as a singular point, and that high-speed search for arbitrary coordinate system can be obtained. To reduce the costs of development and maintenance, we apply the mechanism of AKARI catalogue search to this search function using PHP and PostgreSQL.
内容記述
形態: カラー図版あり
内容記述（英）
Physical characteristics: Original contains color illustrations
DARTS/AKARI 全天マップ画像検索機能の開発
AA1530026009.pdf
(2.13MB)
