Spectrographs

For more than 20 years, Bertin Winlight has been designing optical sub-systems for major astronomy projects, in close collaboration with researchers and scientists from all over the world.

A spectrograph is an optical instrument essential to all telescopes, allowing light to be broken down into its various spectral components for analysis. The resulting spectrum provides a wealth of information about the physical phenomena behind the light. In this way, the success of astrophysicists exploring the universe is closely linked to the quality and performance of the spectrograph.

Spectrographs

Based on specifications, Bertin Technologies studies, designs, manufactures, assembles and tests spectrograph optical sub-systems (such as lenses, prisms, mirrors and collimators) and complete instruments (excluding scientific detectors).

Spectrographs are tested over the entire instrument field as well as in the spectral band to ensure the quality of the PSF and spectral dispersion characteristics. Bertin Winlight’s state-of-the-art equipment and the exceptional polishing and assembly skills of its teams guarantee a high level of operational excellence recognized by customers worldwide. The complementarity between the design and production teams means that the design can be optimized to take account of manufacturing and alignment constraints, helping to reduce costs and mitigate risks.

Mass-produced spectrographs

With our solid experience, we have the capacity to produce mass-produced spectrographs to short deadlines, while guaranteeing impeccable quality for each unit.

Highlights include:

• 24 spectrographs for the MUSE (Multi Unit Spectroscopic Explorer) instrument, operating on the Very Large Telescope (VLT) of the European Southern Observatory (ESO)
• 4 spectrographs for the Prime Focus Spectrograph (PFS) instrument on the Subaru telescope
• 10 spectrographs for the Dark Energy Spectroscopic Instrument (DESI), located at the Kitt Peak Observatory in Arizona.

Our optics and opto-mechanics engineers are involved from the earliest stages of the design process, guiding the optical design towards cost- and risk-optimized solutions.