National Astronomical Observatory of Japan

Scientific Goals and Missions - Optical and Infrared Synergetic Telescopes for Education and Research (OISTER)


The Optical and Infrared Synergetic Telescopes for Education and Research (OISTER) project is to establish the observation network consisting of 1-meter-class optical-infrared telescopes located both within and outside Japan, Seimei 3.8 m telescope, and Subaru Telescope, aiming to develop the time-domain astronomy for multi-messenger astronomy.


The missions of this project are:

  1. to compile and deliver time-domain astronomy data to the scientific community by systematically combining small/medium/large aperture optical-infrared telescopes that have been operated and maintained by the respective university or institute in Japan; and
  2. to nurture highly-skilled youths by offering opportunities for undergraduate/master/Ph.D. students to engage in not only extensive science activities but also productive education programs including on-site observation experience.

Primary Scientific Goals

The primary scientific goals of this project are:

  1. to explore the physical processes in extreme environments by observing the gravitational wave sources, neutrino sources, etc., using the OISTER network of telescopes for advancing the field of multi-messenger astronomy;
  2. to probe the physical mechanisms of cosmic high-energy phenomena by using OISTER multi-wavelength ToO (Target of Opportunity) observations of transient objects; and
  3. to promote time-domain astronomy of cosmic transient objects by multi-mode observations, including photometry, spectroscopy and polarimetry.

Target Date

End of March 2022