Primary mirror1
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Secondary mirror2
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Click Add.
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Click Study.
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Click Done.
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In the Settings window for Parameters, type Parameters 1: Lens Prescription in the Label text field.
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Browse to the model’s Application Libraries folder and double-click the file gregory_maksutov_telescope_parameters.txt.
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Find the Mesh frame coordinates subsection. From the Geometry shape function list, choose Cubic Lagrange. The ray tracing algorithm used by the Geometrical Optics interface computes the refracted ray direction based on a discretized geometry via the underlying finite element mesh. A cubic geometry shape order usually introduces less discretization error compared to the default, which uses linear and quadratic polynomials.
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Browse to the model’s Application Libraries folder and double-click the file gregory_maksutov_telescope_geom_sequence.mph.
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From the Wavelength distribution of released rays list, choose Polychromatic, specify vacuum wavelength.
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In the Maximum number of secondary rays text field, type 0. In this simulation stray light is not being traced, so reflected rays will not be produced at the lens surfaces.
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6
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Select the Use geometry normals for ray-boundary interactions check box. In this simulation, the geometry normals are used to apply the boundary conditions on all refracting surfaces. This is appropriate for the highest accuracy ray traces in single-physics simulations, where the geometry is not deformed.
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In the Model Builder window, under Component 1 (comp1)>Geometrical Optics (gop) click Medium Properties 1.
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From the Optical dispersion model list, choose Get dispersion model from material. The material added above contains the optical dispersion coefficients which can be used to compute the refractive index as a function of wavelength.
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In the Values text field, type lam1 lam2 lam3. These wavelengths were defined in the Parameters 2: General node.
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In the Expression text field, type at('last',gop.rrel). This expression gives the radial distance from the centroid of the spot on the image plane generated by each release feature.
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In the Logical expression for inclusion text field, type at(0,atan2(qy,qx)>-pi/2). This filter removes 1/4 of the rays so that the optical geometry is visible.
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Click Define custom colors.
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Click Add to custom colors.
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Click Define custom colors.
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Click Add to custom colors.
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From the Origin location list, choose Average over area. This option centers each spot on the midpoint of all rays.
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Click Done.
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In the Settings window for Geometry, type Gregory-Maksutov Telescope Geometry Sequence in the Label text field.
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Browse to the model’s Application Libraries folder and double-click the file gregory_maksutov_telescope_geom_sequence_parameters.txt. This file contains details of the telescope optical prescription.
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In the Model Builder window, under Component 1 (comp1) click Gregory-Maksutov Telescope Geometry Sequence.
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In the Part Libraries window, select Ray Optics Module>3D>Spherical Lenses>spherical_lens_3d in the tree.
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In the Select Part Variant dialog box, select Specify clear aperture diameter in the Select part variant list.
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Click OK.
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In the Model Builder window, under Component 1 (comp1)>Gregory-Maksutov Telescope Geometry Sequence click Spherical Lens 3D 1 (pi1).
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In the Select Part Variant dialog box, select Specify clear aperture diameter in the Select part variant list.
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Click OK.
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In the Model Builder window, under Component 1 (comp1)>Gregory-Maksutov Telescope Geometry Sequence click Spherical Mirror 3D 1 (pi2).
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Locate the Position and Orientation of Output section. Find the Coordinate system to match subsection. From the Take work plane from list, choose Corrector (pi1).
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In the Part Libraries window, select Ray Optics Module>3D>Apertures and Obstructions>circular_planar_annulus in the tree.
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In the Model Builder window, under Component 1 (comp1)>Gregory-Maksutov Telescope Geometry Sequence click Circular Planar Annulus 1 (pi3).
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Locate the Position and Orientation of Output section. Find the Coordinate system to match subsection. From the Take work plane from list, choose Primary mirror (pi2).
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Find the Displacement subsection. In the zw text field, type z_img+delta_z_img. The image plane z-coordinate is offset to account for the fact that the ray trace is performed in a vacuum.
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Click OK.
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Click OK.
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Click OK.
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