Facilities

 

Telescope

– Primary mirror of 1.6 m in diameter
– Prime-focus optics with four wide-field correct lens
– Fork-type equatorial mount
– Delivered image quality of less than 1.0 arcsec
  (Under the atmospheric seeing of 0.75 arcsec)
– Optical performance optimized in the I-band
– Drawer-style filter changer to mount four filters
  (Johnson-Cousins BVRI)
– Sliding shutter with rectangular blades
– Dome of 9.2 m in diameter from ASH-DOME

Detector

– Mosaicked with four 9k by 9k e2v CCDs
– 0.40 arcsec per pixel, 2.0 by 2.0 square degree FOV
– Quantum efficiency of ~85% in V and ~80% in I-band
– Readout time of 30 seconds with 32 readout channels
  (Overhead time to take one image is about 90 seconds)
– CCD chip cooled down to -110 degree Celsius
– Four frame-transfer CCDs at focal plane for guiding

Wide-field Photometric Systems