The following optical components are available. These are mainly used for interfacing purposes, and users should supply as far as possible their own components for their experiments:
Communication with the telescope control MicroVax is possible via an RS232 link, enabling the User Interface and the Information display of the TCS to be run in the GHRIL control room.
Full technical details of the GHRIL optics, detectors and PCs are given in ``ING La Palma Technical Note 81: GHRIL User Notes'' by M.N. Devaney, and potential GHRIL users should consult this document.