Astronomical spectroscopy for research, industry, education and leisure

Spectro Star Party OHP 2022

Registration for the Spectro Star Party 2022 is open!

Until May 20, these are reserved for beginners who have never participated before.

Stars won’t look the same

Astronomical spectroscopie consists in spreading out the light coming from stars. This is the way to get a high number of informations on them. And this is suprisingly simple – even with a small instrument.


A spectrograph for exploring the visible, near infrared and near ultraviolet domains at various resolutions.

Spectroscopy Practical Guide

This guide covers all the aspects necessary to accompany you to fast and quality observations with a slit spectrograph..

Demetra software

New version available !!!

Demetra the software dedicated to spectral processing for the ALPY 600 and LISA (available soon for eShel and Whoppshel)

Optical kit Sol'Ex

Build your own Sol’Ex or Star’ex in 3D printing

With handheld spectro and LHIRES LITE discover the spectroscopy without camera and without telescope.

Start in “spectro” (with camera and telescope) thanks to Star Analyser and Alpy 600

With LISA study the celestial objects of low intensity. Access radial speeds with LHIRES III and explore in the near UV with UVEX

With the ESHEL the pros and the confirmed astronomers go on a hunt for exoplanets.

Sn 1181, an unusual story …

Sn 1181, an unusual story …

At first glance, it is curiosity that motivates any amateur who observes the sky. Sometimes this curiosity is rewarded by acquiring a very beautiful picture or by explaining a physical phenomenon that takes place thousands of light years from Earth, through spectroscopic observation.

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RS Oph : the contribution of Shelyak spectrographs

RS Oph : the contribution of Shelyak spectrographs

On August 8, 2021, the recurrent nova RS Oph was observed in outburst at magnitude V = 5. The amateur community immediately mobilized to realize many spectra at various resolutions with various spectrographs (with resolving powers R = 600 to R = 30,000).

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Shelyak instruments: expert in spectroscopy

Shelyak Instruments designs, manufacture and sell for more than 10 years a full range of spectroscopes dedicated to Astronomy, for Research, Industry, Training and Leisure. If you are just curious or experimented observer, we have an instrument for you. We can also adapt these products, or even create new ones on your specifications. We sell all over the world, directly from this website, and also through our resellers worldwide network.

This website gives you all technical information on each instrument, but also a lot of informations on the spectroscopy principles, ideas for project, reference data, and so on. We’re proud to be a dynamic actor of the growing community of spectroscopist, and we want to better and better answer to your needs. If you don’t find the product or the information you need on this website, please contact us directly.


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Products tested and guaranteed

Each product is tuned and tested before shipment. And it is guaranteed for one year.


Expert advice

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Our experts can help you !
Contact us by mail, or at (33)4 76 41 36 81

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