Made to be powered and controlled via a single USB cable, the Starlight Xpress MIDI is the most recent in a line of popular USB filter wheels. A Slimline Off-Axis Guider integrated into this filter wheel is ideally suited for use with Lodestar X2 or Ultrastar guide cameras and can be employed on other autoguider brands as well.

Use of this MIDI Filter Wheel together with any Starlight Xpress imaging camera produces a total back focus distance of 55 mm. This is crucial because for many refractors with focal reducers/flatteners, 55 mm is the optimal back focus. A male M42 T-thread camera side adapter. The telescope side adapter is M48 female.