The spectrograph - Optomechanics 10c with some modifications
The spectrograph (blue) mounted on the old single instrument offset guider (right side black box) and with CCD 1 mounted (left lower part) - replaced now by CCD 5 . The white box at top is the integrating video CCD camera by Spindler&Hoyer (replaced now by Watec 120N+).
Same Spectrogrpahs are in use e.g. in Virginia, Austin, Union College and Tübingen