== Instrument Description ==
The "Instrument Selector" is essentially a new fold mirror that has been installed in the acquisition boxes of both SpUpNIC and HiPPO<ref>''22 Feb 2024: the implementation of the fold mirror in HiPPo's acquisition box has not been completed at time of writing</ref> that allows the observer to switch between two instruments: a "primary" and a "secondary" instrument where the primary instrument is either SpUpNIC or HiPPo and the secondary instrument is always a new SHOC system. In other words, a SHOC is from now on permanently available on the 74-inch.
Below is the image showing the new SHOC system mounted to the side of SpUpNIC's acquisition box. The new SHOC system replaces the old guider box that use to migrate between SpUpNIC and HiPPo with a newly designed off-axis "pick-off" guider system that can accommodate a filter wheel unit and SHOC camera behind the guider.