Cylindrical Lens With a Grating?
At the AAVSO meeting last week we toured the GOTO telescope lab at Appalacian State U. The had a low-res spectroscopic setup on their telescope that used a grating and a cylilndrical lens mounted in two separate slides about three inches apart. They said that students could slide those into the beam like similarly mounted lenses and do some slitless spectroscopy without a large change in the focus.
I know that one of the rough things about the Star Analyzer is that you need a large amount of focus travel if you want to try mounting it in your filter wheel. I wanted to see if anyone on this forum had experimented with using a grating and cylindrical lens combination on their rig and how it worked out for them if they had.