InfraRed Survey Facility (IRSF) is our facility for near-infrared (NIR) observation located at South African Astronomical Observatory. The NIR camera SIRIUS on the 1.4m telescope provides three 7.7′×7.7′ images in the J ( 1.25μm), H (1.63μm), and KS (2.14μm ) bands simultaneously with a pixel scale of 0.45". IRSF has three unique capabilities, which are suitable for follow-up observations of AKARI-selected objects. Several synergistic studies with AKARI are in progress from stars to galaxies. We introduce advantages of the above unique capabilities of IRSF for further synergistic studies between AKARI and IRSF.

ABSTRACT
1. INTRODUCTION
2. UNIQUE CAPABILITIES OF IRSF
    2.1. Polarization
    2.2. ND Filters
    2.3. Multi-Bandpass Narrow Band Filt
3. SUMMURY
REFERENCES

• T. NAGAYAMA(Department of Astrophysics, Nagoya University)
• T. KOKUSHO(Department of Astrophysics, Nagoya University)
• H. KANEDA(Department of Astrophysics, Nagoya University)