Award-winning Nigeriasat-2 satellite features key components made by Optical Surfaces
Optical Surfacescontact supplier
Optics from Optical Surfaces have helped Surrey Satellite Technology win the 2012 Sir Arthur Clarke award for ‘Best Space Activity — Industry/Project’ for the Nigeriasat-2 Earth observation satellite. Nigeriasat-2 was built for the Nigerian Space Agency (NASRDA).
The 300kg satellite incorporates a high-performance camera with key optical components manufactured by Optical Surfaces.
It has been able to capture 2.5m-resolution images, enabling detailed analyses of ground structures, aircraft and vehicles.
Nigeriasat-2 carries two imagers: a 2.5m-resolution panchromatic imager and a 5m-resolution multispectral imager with a swath width of 20km.
Key benefits of product application
- Optical Surfaces’ skilled craftsmen produced the 385mm light-weighted primary mirror and other optics in the Cassegrain camera, with a surface accuracy of lambda/20p-v; these optics have enabled the satellite to take high-resolution images.
- The company is claimed to be one of Europe’s leading manufacturers of high-precision optics for satellite deployment and astronomical research.
- Its manufacturing workshops and test facilities are ISO 9001-2008 approved.
Optical Surfaces is offering high-precision toroidal mirrors (toroids) that can be made to customers’ exact specifications. Toroidal mirrors are widely used for correction of aberration in a range of applications served by spectroscopic instruments, monochromators and imaging devices that require pinpoint focusing.
Optical Surfaces has introduced small-diameter (25–60mm) reflective beam expanders, which are suitable for space-restricted applications such as high-power lasers and multi-wavelength interferometry. Incorporating high-precision off-axis mirrors, the reflective beam expanders are said to provide an unobstructed output and highly efficient transmission.
Optical Surfaces has been selected by a spectrophotometer manufacturer to supply ultra-high-precision matched beamsplitter/compensator optics for the interferometer that lies at the heart of its high-resolution FTIR system.
Optical Surfaces has introduced the OS-Z range of mirror mounts, developed to support off-axis paraboloid, spherical and flat mirrors in a way that overcomes a number of constraints imposed by general-purpose mounts.
Off-axis paraboloids (OAPs) direct and focus incident collimated light at a specific angle, allowing unrestricted access to the focal point as well as reducing the size and minimising the weight of an optical design. Working with high-quality optical glasses, Optical Surfaces produces standard OAPs from 60mm to 600mm in diameter.