I GREATLY regret that in a note of mine on a “new mode of using the concave diffraction grating,” in the “Astronomical Column” of March 22 (p. 501), I wrongly interpreted a sentence of Prof Rizzo's ...

II. I HAVE already referred to the importance of applying in astronomical research the methods of the physicist. During the last quarter of a century the study of spectro-scopic phenomena in the ...

Holographic concave grating design elevates Ocean Optics’ newest miniature spectrometer. Ocean Optics (www.OceanOptics.eu) has launched a family of aberration-corrected holographic concave diffraction ...

Our concave grating spectrometers deliver high optical performance in small portable enclosures. The StellarNet concave grating spectrometers deliver high optical performance in a small ruggedized ...

Compact imaging spectrometer combines a catadioptric lens and a special flat immersion reflection grating. (Courtesy: Ronald B. Lockwood, MIT Lincoln Laboratory) A new, slimline imaging spectrometer ...