The Department has an active program of optical and infrared instrumentation. Larry Ramsey acted as the Project Scientist for the Hobby-Eberly Telescope and the Principal Investigator for one of its three optical spectrographs. Ramsey and Suvrath Mahadevan are currently developing the Pathfinder instrument for HET, which is a high-resolution infrared spectrograph that will be used for searching for rocky planets around low-mass stars. Mahadevan is also participating in the commissioning of another planet-hunting spectrograph in India called PARAS. Recent graduate Stephen Redman and current graduate student Arpita Roy have played major roles in these projects.