A tandem gratings spectrometer with high imaging quality is designed. By applying the geometric analysis, the spectral broadband anastigmatic imaging conditions have been obtained. It offers an advanced design with low aberrations for the whole spectral range of the small-scale spectrometer both in the off-axis and coaxial telescope applications. A UV design exhibiting excellent optical performance is presented. The specifications of design have also been investigated.

© 2014 Optical Society of America

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2011 (1)

2010 (2)

2009 (1)

2006 (1)

2004 (1)

1979 (1)

1977 (1)

1975 (1)

1945 (1)

Bartoe, J. D. F.

Beasley, M.

Beutler, H. G.

Boone, C.

Brueckner, G. E.

Couce, B.

Cunningham, N.

dela Fuente, R.

Gonzalez-Nunez, H.

Green, J.

Lee, K.-S.

Lin, G.-y.

Lu, F.

Mertz, L.

Montero-Orille, C.

Nakada, M. P.

Prieto-Blanco, X.

Qu, Y.

Rolland, J. P.

Thompson, K. P.

Wang, S.

Wang, S.-r.

Wilkinson, E.

Xue, Q.

Yu, L.

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Figures (4)

Fig. 1.
Fig. 1.

Tandem gratings mounting. G1 is the plane grating. G2 is the concave grating with radius R2. i and θ are the first incidence and diffraction angles for G1. i and θ are for G2. Im and Is stand for the meridian and sagittal image positions. δ is the distance between them and defines the astigmatic difference. The ruling densities of G1 and G2 are identical. rm and rs are the meridian and sagittal focal distances from G2.

Fig. 2.
Fig. 2.

New advanced tandem gratings spectrometer mounting.

Fig. 3.
Fig. 3.

Sketch of imaging plane. The width of working wave band is λmaxλmin·r with different subscript stands for different focal distance. The direction of the distance rcentral is also the X direction. The line I1I2 stands for the detector plane and the dashed curve S1S2 stands for the ideal imaging plane. w is the width of I1I2 (usually the width of the detector).

Fig. 4.
Fig. 4.

(a) Sketch of the design. (b) RMS spots radii versus wavelengths in the central and marginal fields of view. (c) RMS spots radii versus fields of view (+X, along the length of slit) in the central and marginal wavelengths.

Tables (1)

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Table 1. Specifications and Performances for the Advanced Tandem Imaging Spectrometer

Equations (19)

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