The purpose of the Space Telescope Configurator is to provide designers with an affordable and innovative alternative to traditional telescope development. The products we offer are customizable Cassegrain telescopes capable of self-coating their mirrors in space. While in-space coating has been demonstrated several times over the past 50 years, ZeCoat is reinventing the process with five breakthrough technologies that make it simpler, cleaner, and more effective.
Our new technologies include battery-powered deposition chambers, advanced EUV coatings, silicon cladding layers, black-coated baffles, and a micrometeoroid-protective shield. Together, these innovations eliminate the need for an oxide layer by allowing coatings to be applied directly in the vacuum of space. Without oxidation, telescopes can achieve unprecedented reflectivity—enabling missions that were once impossible, including those designed to observe extreme ultraviolet (EUV) wavelengths between 30-50 nm.
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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.