NICS - JH Grism

The JH grism consists of a 240 lines/mm blaze=34 deg transmission grating glued on the hypotenuse of a 42 deg prism of BK7 glass and working in first order.

The grism is mounted inside the grism wheel of NICS in combination with a anti-reflection coated disk of silicon which acts as order sorter filter.

For any comments please contact Francesca Ghinassi.