EVALUATION OF PARABOLIC OPTICS FOR THE AEROSPACE LAMELLAR GRATING INTERFEROMETER.
Rept. for Nov 68-Jan 69,
AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS
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The Czerny-Turner collimating system used in the Aerospace lamellar grating interferometer is shown to lead to significant instrumental line broadening. This system is compared with an off-axis parabolic mirror system, and the following conclusions are reached. 1 The instrumental line broadening of the parabolic mirror system will be an order of magnitude smaller than for the Czerny-Turner system. 2 The coma of the parabolic mirror system is negligible. 3 The wavefront distortion of the parabolic mirror system is less than that of the Czerny-Turner system. Author