Const 20 l 52 x 2 T Tx2 1 SSy2

The sagittal sections define the tangential focii, then the best spectral resolution is obtained by tangential lines parallel to the grating lines. This is achieved by the condition

In (3.78), the second component of Astm3 is represented by (S+S')y2/2. At a given wavelength X, the component in 5'2x of the second righthand term corresponds to the curvature of the spectral lines with respect to a rectilinear input slit.

0 0

Post a comment