Flat-Field Spectrograph Camera Designs

D. H. Schulte

doi:10.1364/AO.5.000457

Applied Optics
Vol. 5,
Issue 3,
pp. 457-461
(1966)
•https://doi.org/10.1364/AO.5.000457

Flat-Field Spectrograph Camera Designs

D. H. Schulte

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D. H. Schulte, "Flat-Field Spectrograph Camera Designs," Appl. Opt. 5, 457-461 (1966)

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Abstract

The final designs for the short-focus spectrographic cameras for the 213-cm Kitt Peak reflector are here defined. Duplicates of some of these cameras will be used also on the 152-cm telescope of the Cerro Tololo Inter-American Observatory in Chile.

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Surface number and type	Vertex radius of curvature (cm)	Distance to next surface	Optical material	Remarks
1, Sph.	∞	+72.4	Air (L-R)	Entrance pupil
2, Sph.	∞	+1.40	Fused quartz (L-R)
3, Asph.	−968.0^b	+58.67	Air (L-R)
4, Sph.	−69.84	−33.05	Reflection in air (R-L)
5, Sph.	−11.65	−0.795	Fused quartz (R-L)
6, Sph.	+265.2	−0.667	Air (R-L)	Distance measured to focus

Surface number and type	Vertex radius of curvature (cm)	Distance to next surface	Optical material	Remarks
1, Sph.	∞	+72.4	Air (L-R)	Entrance pupil
2, Sph.	∞	+1.40	Fused quartz (L-R)
3, Asph.	−3467.4^b	+106.7	Air (L-R)
4, Sph.	−132.00	−62.43	Reflection in air (R-L)
5, Sph.	−21.865	−1.50	Fused quartz (R-L)
6, Sph.	+838.2	−1.77	Air (R-L)	Distance measured to focus

Surface number and type	Vertex radius of curvature (cm)	Distance to next surface	Optical material	Remarks
1, Sph.	∞	+15.2	Air (L-R)	Entrance pupil
2, Asph.	+593.47^b	+0.635	Fused quartz (L-R)	Blue
	+657.38^c	+0.635	BSC − 2 (L-R)	Red
3, Sph.	∞	+25.65	Air (L-R)	Blue
	∞	+25.91	Air (L-R)	Red
4, Sph.	−31.980	−15.09	Reflection in air (R-L)
5, Sph.	−5.156	−0.432	Fused quartz (R-L)
6, Sph.	∞	−0.361	Air (R-L)	Distance measured to focus

Surface number and type	Vertex radius of curvature (cm)	Distance to next surface	Optical material	Remarks
1, Sph.	∞	+15.2	Air (L-R)	Entrance pupil
2, Asph.	+178.33^b	+0.635	Fused quartz (L-R)
3, Sph.	∞	+6.731	Air (L-R)
4, Sph.	∞	+11.070	Fused quartz (L-R)
5, Sph	−23.089	−11.150	Reflection in fused quartz (R-L)
6, Sph.	−2.540	−0.089	Sapphire (R-L): N₄₀₀₀ = −1.78658
7, Sph.	+12.706	−0.076	Fused quartz (R-L)	Distance measured to focus

Surface number and type	Vertex radius of curvature (cm)	Distance to next surface	Optical material	Remarks
1, Sph.	∞	+72.4	Air (L-R)	Entrance pupil
2, Sph.	∞	+1.40	Fused quartz (L-R)
3, Asph.	−968.0^b	+58.67	Air (L-R)
4, Sph.	−69.84	−33.05	Reflection in air (R-L)
5, Sph.	−11.65	−0.795	Fused quartz (R-L)
6, Sph.	+265.2	−0.667	Air (R-L)	Distance measured to focus

Abstract

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Figures (6)

Tables (4)

Equations (1)

Applied Optics