The Multi-wavelength Data Analysis System (MDAS)
/Open-use of Computers

Introduction

• The Multi-wavelength Data Analysis System
  The Astronomy Data Center (ADC) operates the Multi-wavelength Data Analysis System (MDAS) which is an open-use computing system. This system is constructed to analyze astronomical data of various wavelengths. It provides over one hundred pieces of software and supports astronomy data reduction and analysis observed by various telescopes.

• Open-use computer rooms
  Open-use computer rooms are located in the South Building, Subaru Building, and ALMA Building in Mitaka campus. Users can use terminal computers, and also make posters using large format printers in the room. See Open-use computer rooms page for details.
  

• ADC open-use help desk
  The ADC open-use help desk operates the MDAS and supports users. If you have any questions, please feel free to contact us.

  Place	room #101, 1F South building
  Office hours	Weekdays 9:30-17:00 (except 12:00-13:00)
  E-mail	consult(atmark)ana.nao.ac.jp
  Extension number	3832

• NAOJ Privacy statement and policy
  The ADC protect the security and privacy of your personal data in conformity with the General Access Logging Policy in NAOJ. In this site and the MDAS, we store your account information and access logs to maintain the security and the quality of this system. We use the stored data only for analyzing the usage status and solving the security issues. If you use our system, we consider that you agree with the terms and conditions of the policy.

Announcements

Application

	Regulations for use of the MDAS	<-- Please read through before you apply for an account.
	Application for Use	<-- To get a new account, and application for VPN, GID

How to use the MDAS

	User's Guide (PDF)	<-- Last update: 16th October 2025 (for the old system is here)
	Quick Instruction (PDF)	<-- A quick guide to MDAS for first-time users
	Notes on use	<-- Guidelines of using resources, Periodic data deletion policy
	FAQ	<-- Frequently Asked Questions about the MDAS
	Open-use computer rooms	<-- Guide to the open-use computer rooms

Information of the MDAS

	Information from the ADC	<-- Announcement to the MDAS users
	System Working Status	<-- Current operational status of the MDAS
	Maintenance schedule	<-- Maintenance schedule of the MDAS

Published Results using the MDAS

	Published papers	<-- Publications using MDAS (this page in Japanese)
	Request for acknowledgments	<-- Example of an Acknowledgment