Assembling
Optical base
Souvenir picture
Camera mirror
(1.3m dia.)
Gratings
(165mm x 225mm)
Collimator/
Refocus mirror
(180mm sq.)
Mask mirror
(560mm x 30mm)
(before coating)
Tidying the room
OHS@Nasmyth(1)
OHS@Nasmyth(2)
OHS@Nasmyth(3)
OHS@Nasmyth(4)
Fiber bundle
for MOS option
Fiber slit
Probe head
Probe stage
Probe stage
Dummy head
Cosmic-Ray Group Home page 
Prototype OHS