Abstract

A simple method for accurate spectral-line-tilt measurement in Ebert spectrographs is presented; it utilizes a special diaphragm situated in front of the entrance or behind the exit slit. This diaphragm splits the image of each tilted line into two fringes. The mutual distance is proportional to the exit slit tilt away from its position for which the line tilt is compensated.

© 1993 Optical Society of America

Spectral line tilt effect in the Ebert spectrograph

Ryszard Trawinski, Andrzej Bielski, and Roman St. Dygdala
Appl. Opt. 26(14) 2912-2914 (1987)

Spectral spread function of a double-pass parabolized Ebert monochromator

Mirta A. Gil and Guillermo O. Mattei
Appl. Opt. 32(1) 27-29 (1993)

Automatic interference method for measuring transparent film thickness

A. González-Cano and E. Bernabéu
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Anastigmatic tilted Mangin mirror for long-focus imaging systems

J. R. Fletcher
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Measurement of the numerical aperture and f-number of a lens system by using a phase grating

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