Ok so the three modes we want to have access to are Position Mode: YMINUS, XMINUS (no slit, no grating) View Slit Mode: YPLUS, XMINUS (slit, no grating) Take Spectrum Mode: YPLUS, XPLUS (slit, grating) In principle, "Position Mode" should include some kind of repeated image-taking, like a "focus" mode, but I think that's easy to have enabled anyway. So is this something you could easily add, or something I should try to develop myself? I very much appreciate your attention to this, by the way.Read More...