Multicolor Active Galactic Nuclei Monitoring or MAGNUM is project started in 1995, and with observations starting in 2000 using 2m reflecting telescope for scientific study of active galactic nuclei. [1] The telescope is run by the University of Tokyo and other Japanese academic institutions. [2] MAGNUM was one of the telescope that observed a cosmic explosion billions of years away in 2005. [3] The telescope is for long-term study of the size of the universe, [4] for example it studied the Seyfert 1 galaxies NGC 5548, NGC 4051, NGC 3227, and NGC 7469 [5]
The telescope can view optical-infrared (near infrared0 and is located at the Haleakala Observatory.