NICS - HK Grism

The HK grism consists of a 150 lines/mm blaze=36.8 deg transmission grating glued on the hypotenuse of a 31 deg prism of IRGn6 glass and working in first order.

The grism is mounted inside the grism wheel of NICS in combination with a custom-designed filter with cut-on at 1.4 Ám which acts as order sorter filter.

For any comments please contact Vania Lorenzi.