RSpec / Real-time Spectroscopy. Lhires 3 - High Resolution Spectrograph. Rainbow Optics, Star Spectroscopes, Spectrographs, Star Spectroscope, Spectrograph. Visual Spec - home page. Spectroscopy, CCD & Astronomy. ROBIN'S ASTRONOMY PAGE SPECTROSCOPY. I first started experimenting with spectroscopy in late 2002 using a 100 lines/mm transmission grating bought from the educational supplies company Jeulin in France, which I came across on Christain Buil's website here It was mounted in a 50x50mm glass slide and, unusually for an inexpensive grating, it was blazed which increased the efficiency (most of the light is diffracted into one of the first order spectra.)
In late 2004, I eventually traced the manufacture of this grating to Paton Hawksley in the and after discussions with them, the idea of an affordable filter cell mounted grating, specifically designed to be easy to use with a range of CCD cameras, was born. This became the Star Analyser 100. In 2013 I developed a low profile 200 line/mm version, the (SA200-F) for use in filter wheels and other situations where it is difficult to find enough space for the SA100.