Auxiliary Optical Systems for the Kitt Peak Telescopes

D. H. Schulte

doi:10.1364/AO.2.000141

Applied Optics
Vol. 2,
Issue 2,
pp. 141-151
(1963)
•https://doi.org/10.1364/AO.2.000141

Auxiliary Optical Systems for the Kitt Peak Telescopes

D. H. Schulte

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D. H. Schulte, "Auxiliary Optical Systems for the Kitt Peak Telescopes," Appl. Opt. 2, 141-151 (1963)

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Abstract

Descriptions are given of some of the more unusual optical systems to be used in the testing and the research program implimentation of the large Kitt Peak instruments.

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Focal length (cm)	F-ratio	Location	Dispersion with available gratings (Å/mm)	Corrector plate	Field flattener
7.6 (focusing in glass)	0.75	Cassegrain	78 –400	Yes	Yes
15.2	1.5	Cassegrain	39 –200	Yes	Yes
34.3	1.5	Coudé	24.3–48.6	Yes	Yes
61.7	2.7	Coudé	13.5–27.0	Yes	Yes
93.7	4.1	Coudé	8.9–17.8	Yes	No
134.9	5.9	Coudé	6.2–12.4	Yes	No
240.0	10.5	Coudé	3.5– 7.0	No	No
365.8	16.0	Coudé	2.2– 4.4	No	No

Surface no. (n)	Type of surface	Vertex radius (cm)	Distance to surface n + 1 (cm)	Glass type to surface n and n + 1	Remarks
1	Aspheric	−1116.8	−388.5	Reflection in air	X(cm) = −4.4769 × 10⁻⁴s²
	(see remarks)			Reflection in air	+ 9.562 × 10⁻¹²s⁴
2	Aspheric	−518.6	+493.0	Reflection in air	Hyperboloid w/eccentricity = 2.336
	(see remarks)			Reflection in air	Hyperboloid w/eccentricity = 2.336
Focus	—

Surface no. (n)	Type of surface	Vertex radius (cm)	Distance to surface n + 1 (cm)	Glass type between n and n + 1	Remarks
1	Spherical	∞	+1.60	n_e = +1.51899
2	Spherical	−17.37	+54.03	Air
3	Spherical	∞	+0.76	n_e = +1.51899
4	Spherical	−53.18	+1118.4	Air
5	Aspherical (see remarks)	−1116.8	−1118.4	Reflection in air	(Primary mirror)
	Aspherical (see remarks)			Reflection in air	X(cm) = −4.4769 × 10⁻⁴s²
					+9.562 × 10⁻¹²s⁴
6	Spherical	−53.18	−0.76	n_e = −1.51899
7	Spherical	∞	−54.03	Air
8	Spherical	−17.37	−1.60	n_e = −1.51899
9	Spherical	∞	−81.90	Air
10	Focus (front and back)	—	—	—

Surface no. (n)	Type of surface	Vertex radius (cm)	Distance to surface n + 1 (cm)	Glass type between n and n + 1	Remarks
1	Aspherical (see remarks)	−1116.8	−533.0	Reflection in air	(Primary mirror)
					X(cm) = −4.4769 × 10⁻⁴s²
					+9.562 × 10⁻¹²s⁴
2	Spherical	−33.09	−0.97	B & L BSC-2
3	Spherical	+42.80	−0.64	B & L DF-2
4	Spherical	−297.1	−18.60	Air
5	Focus	—	—	—

Surface no. (n)	Type of surface	Vertex radius (cm)	Distance to surface n + 1 (cm)	Glass type between n and n + 1	Remarks
1	Aspherical (see remarks)	+376	+0.63	Fused quartz	X(cm) = +1.33 × 10⁻³s²
					−6.10 × 10⁻⁵s⁴
					−2.13 × 10⁻⁷s⁶
2	Spherical	∞	+16.64	Air
3	Spherical	−20.32	−9.62	Reflection in air
4	Spherical	−3.28	−0.23	Fused quartz
5	Spherical		−0.23	Air
6	Focus	—	—	—

Surface no. (n)	Type of surface	Vertex radius (cm)	Distance to surface n + 1 (cm)	Glass type between n and n + 1	Remarks
1	Spherical	+100.0	+0.627	Schott BK-7
2	Aspherical (see remarks)	−1767.	+3.150	Air	X(cm) = −2.83 × 10⁻⁴s²
					+2.42 × 10⁻⁴s⁴
					+1.51 × 10⁻⁶s⁶
					+7.88 × 10⁻⁹s⁸
					+5.84 × 10⁻¹⁰s¹⁰
3	Spherical	∞	+6.335	Schott BK-7
4	Spherical	−14.25	−6.335	Reflection in BK-7
5	Spherical	∞	−0.152	B & L BSC-2
6	Spherical	−7.766	−0.018	Air
7	Spherical	−2.945	−0.437	B & L DF-2
8	Focus	—	—	—

Abstract

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Figures (9)

Tables (6)

Equations (2)

Applied Optics