The Optical System for the 3.5-m ESO Telescope

H. Köhler

doi:10.1364/AO.7.000241

The Optical System for the 3.5-m ESO Telescope

H. Köhler

Applied Optics
Vol. 7,
Issue 2,
pp. 241-247
(1968)
•https://doi.org/10.1364/AO.7.000241

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H. Köhler, "The Optical System for the 3.5-m ESO Telescope," Appl. Opt. 7, 241-247 (1968)

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History
- Original Manuscript: September 8, 1967
- Published: February 1, 1968

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Abstract

The optical design of a mirror telescope with a free aperture of 3.5 m is described. Observations can be made in the Cassegrain (RC) focus f/8, in the direct focus f/3, and in the coudé focus f/30. The results of ray tracing in the form of spot diagrams are dealt with. Some technological problems are discussed.

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ν	r_ν	d_ν	h_ν/h₁	p_ν	I_ν	II_ν	IIIα_ν	P_ν
1	−0.7250	0.2504	1	−0.725	5.248	−3.805	2.759	−2.759
2	0.3586	0.2925	0.3101	−0.896	−1.917	1.717	−1.537	5.577
3	−0.0264	0.0009	0.0068	26.200	−0.007	−0.173	−4.522	− 11.946
4	−0.0345	—	0.0063	18.472	0.005	0.088	1.628	9.128
1*	—	—	—	ϑ₁ 0	−6.011	0	0	0
2*	—	—	—	ϑ₂ 0.810	2.682	2.173	1.760	0
			f = 1	∑:	0	0	0.088	0
				∑IVα_ν = 0.176	∑III_ν = 0.263		∑III_ν = 0.088

ν	r_ν	d_ν	h_ν/h₁	p_ν	I_ν	II_ν	IIIα_ν	P_ν
1	−2.025	0.903	1	−2.025	0.241	−0.488	0.988	−0.988
2	3.824	0.001	0.108	−1.288	−0.055	0.071	−0.092	0.090
3	−964.22	0.031	0.108	−0.872	0.061	−0.054	0.047	0
4	−31.444	0.001	0.077	−0.842	−0.044	0.037	−0.031	−0.011
5	−964.22	0.051	0.076	−0.888	0.043	−0.038	0.034	0
6	−0.525	0.001	0.024	0.927	−0.015	−0.014	−0.013	−0.656
7	−964.22	0.018	0.023	−1.910	0.012	−0.024	0.046	0
8	0.069	0.002	0.006	−18.445	−0.002	0.043	−0.799	4.542
9	0.137	—	0.005	−6.019	0.002	−0.014	0.088	−2.302
1*	—	—	ϑ₁	0	−0.276	0	0	0
2*	—	—	ϑ₂	8.377	−0.080	−0.671	−5.620	0
4*	—	—	ϑ₄	12.239	0.120	1.466	17.938	0
6*	—	—	ϑ₆	40.222	−0.088	−0.328	−13.202	0
			f = 1	∑:	−0.001	−0.014	−0.618	0.677
				∑IVα_ν = −0.560	∑III_ν = −1.178		∑IV_ν = 0.058

ν	r_ν	d_ν	h_ν/h₁	p_ν	I_ν	II_ν	IIIα_ν	P_ν
1	−0.7250	0.2504	1	−0.725	5.248	−3.805	2.759	−2.759
2	0.3586	0.2925	0.3101	−0.896	−1.917	1.717	−1.537	5.577
3	−0.0264	0.0009	0.0068	26.200	−0.007	−0.173	−4.522	− 11.946
4	−0.0345	—	0.0063	18.472	0.005	0.088	1.628	9.128
1*	—	—	—	ϑ₁ 0	−6.011	0	0	0
2*	—	—	—	ϑ₂ 0.810	2.682	2.173	1.760	0
			f = 1	∑:	0	0	0.088	0
				∑IVα_ν = 0.176	∑III_ν = 0.263		∑III_ν = 0.088

ν	r_ν	d_ν	h_ν/h₁	p_ν	I_ν	II_ν	IIIα_ν	P_ν
1	−2.025	0.903	1	−2.025	0.241	−0.488	0.988	−0.988
2	3.824	0.001	0.108	−1.288	−0.055	0.071	−0.092	0.090
3	−964.22	0.031	0.108	−0.872	0.061	−0.054	0.047	0
4	−31.444	0.001	0.077	−0.842	−0.044	0.037	−0.031	−0.011
5	−964.22	0.051	0.076	−0.888	0.043	−0.038	0.034	0
6	−0.525	0.001	0.024	0.927	−0.015	−0.014	−0.013	−0.656
7	−964.22	0.018	0.023	−1.910	0.012	−0.024	0.046	0
8	0.069	0.002	0.006	−18.445	−0.002	0.043	−0.799	4.542
9	0.137	—	0.005	−6.019	0.002	−0.014	0.088	−2.302
1*	—	—	ϑ₁	0	−0.276	0	0	0
2*	—	—	ϑ₂	8.377	−0.080	−0.671	−5.620	0
4*	—	—	ϑ₄	12.239	0.120	1.466	17.938	0
6*	—	—	ϑ₆	40.222	−0.088	−0.328	−13.202	0
			f = 1	∑:	−0.001	−0.014	−0.618	0.677
				∑IVα_ν = −0.560	∑III_ν = −1.178		∑IV_ν = 0.058

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