I have been experimenting with a Star Analyzer 100 diffraction grating in the nose-piece of the DMK 41AU02.AS tied to a 80mm f/6 refractor to produce low resolution spectre of brighter stars. Results are quite rewarding. Despite the DMK 41AU02.AS CCD being non-cooled, exposure of 30 seconds have produced very usable spectra of 7th and 8th magnitude stars.

Jim Ferreira, Livermore CA