Abstract

The design concept of a high speed stellar spectrograph for gratings up to a ruled length of 128 mm and for dispersions from 80 Å/mm to 20 Å/mm is described. It consists of a mirror collimator and two exchangeable mirror cameras. The impinging and diffracted bundle of light is corrected by means of concentric menisci which are exchanged together with the camera. Information is given about design details and the corrections obtained.

© 1968 Optical Society of America

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References

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  1. O. C. Wilson, Publ. Astron. Soc. Pacific 68, 346 (1956).
    [CrossRef]

1956 (1)

O. C. Wilson, Publ. Astron. Soc. Pacific 68, 346 (1956).
[CrossRef]

Wilson, O. C.

O. C. Wilson, Publ. Astron. Soc. Pacific 68, 346 (1956).
[CrossRef]

Publ. Astron. Soc. Pacific (1)

O. C. Wilson, Publ. Astron. Soc. Pacific 68, 346 (1956).
[CrossRef]

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Figures (6)

Fig. 1
Fig. 1

Angles of incidence and diffraction.

Fig. 2
Fig. 2

Spectral regions of two gratings.

Fig. 3
Fig. 3

Camera with twice-through corrector.

Fig. 4
Fig. 4

Height of ray bundle for different tilts of the grating.

Fig. 5
Fig. 5

Optical arrangement of the whole spectrograph with meniscus lenses.

Fig. 6
Fig. 6

Aberrations for meniscus system and system with twice-through corrector.

Equations (1)

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E = const . D T ( d λ / d s ) P A C W β ,

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