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High Precision Telescope Spectrograph Optics

Optical Surfaces Ltd. is a leading international supplier of high precision spectrograph opticsfor astronomical telescopes. Using a spectrograph enables researchers to study the chemical and physical conditions that exist through a cross-section of space.

Combined with a land or space-based telescope a spectrograph can reveal valuable information from the spectral distribution of light from a distant astronomical object.

Benefiting from a unique facility, where temperatures remain constant year-round and vibration is practically non-existent, allows Optical Surfaces Ltd to produce and test demanding telescope spectrograph optics (aspheres, mirrors, prisms, lenses and flats) that stretch the limits of conventional optical fabrication techniques.

Optical Surfaces Ltd ( has been producing optical components and systems for more than 50 years and is now accepted as one of the world's leading manufacturers of high precision telescope spectrograph optics. The company's ISO 9001-2008 approved manufacturing workshops and test facilities are situated deep underground in a series of tunnels excavated in solid chalk where temperature remains constant and vibration is practically non-existent. With such stable conditions testing, particularly with long path lengths, becomes quantifiable and reliable. Working with these natural advantages is a highly skilled team of craftsmen with a commitment to excellence in both product quality and customer service.

For further information on high precision telescope spectrograph optics please contact Optical Surfaces Ltd. on telephone on +44-208-668-6126 / [email protected]. A selection of astronomical customer stories from around the world may be reviewed at


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