This website allows you to DESIGN either a Classical Cassegrain or Ritchey Chrétien custom space telescope. Simply select the telescope configurator section, and adjust the different parameters. Some of the parameters include the primary mirror diameter, the desired wavelength to be observed, and the advanced mirror coatings that we can add. Our goal is to show researchers, engineers, and companies what is possible for us to make here at Zecoat.
Fill out parameters and click Update Summary to load calculated parameters.
$0.00
How much the system focal length is extended by the secondary mirror.
Distance from the secondary mirror to the primary focus point.
Distance from the secondary mirror to the image plane.
Physical separation between primary and secondary mirrors.
Radii of curvature for the primary and secondary mirrors.
Describes the conic shape of the primary and secondary mirrors.
For the true Cassegrain Coma = 0.5, i.e. exactly the same as for a paraboloid of the same diameter .
This coefficient quantifies how much astigmatism is introduced by the geometry of the mirror system.
Petzval curvature represents the mean field curvature from both mirrors and affects how a flat image plane curves in space.
The total field curvature, taking into account both Petzval and astigmatic effects. A positive curvature indicates a focal surface that is concave towards the incident light.
Conversion to arcseconds based on system geometry and field of view, θ (in radians).
How much the image plane curves due to field curvature aberration.
The physical diamter of the secondary mirror required to capture all the light reflected from the full aperature of the primary.
The diameter of the light cone from an off-axis object. Uses field angle θ (in radians).
The maximum surface deviation from the sphere is given by the above equation.
The slope at the edge relative to the sphere is given by the derivative of Eq. 14.