Spectroscopy, from initiation to performance
CEO of Shelyak Instruments eShel III in few words The eShel III spectroscope is one of the flagship instruments in the Shelyak Instruments product line. This is the third generation of this instrument, which combines high resolution with a wide spectral range. This...
By Olivier Garde The eShel II spectroscope features an 85-mm focal-length camera lens that is no longer manufactured; an alternative had to be found, so Shelyak Instruments designed its own 122-mm focal-length Petzval-type lens. This “custom” design has made it...
Spectroscopy, from initiation to performanceThe BLOG at the service of the astronomical community By Olivier Garde The eShel II featured an 85mm focal length camera lens which is no longer manufactured; an alternative had...