Site Policy

This site is managed by the Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo (hereinafter referred to as “the Observatory” ).


The Observatory retains the copyright to all the content on this site, including text, images and documents, unless otherwise indicated. If you would like to use the content, please read the “Terms of Use”.

Linking to the Website

Generally, pages of this site may be linked freely, and displaying the URLs of this site in the magazines or other such media is permitted. Depending on the content of your website, however, you may be asked to remove your link to this site. Displaying the page of this site within a frame on your website is strictly forbidden. Note that the URLs of this site are subject to change or removal without prior notice.

External Links

The Observatory will bear no responsibility for the content of external websites linked from pages on this site.


The Observatory uses Google Analytics, a web analytics service, on this site in order to understand and analyze how people access this site and provide increased usability and more helpful services. Google Analytics uses cookies to collect access information. This site sends cookies (issued by this site) to your computer via a web browser to collect anonymous data on computer traffic.

Personal Information

The Observatory may collect personal data, such as your name, mail address or phone number, for the execution of events and necessary contact details. Information collected will be handled properly, and used only within the scope of the purpose of use.