Buscher leads optical/infrared astronomical interferometry research at the Cavendish, co-leading COAST and serving as System Architect for the Magdalena Ridge Observatory Interferometer (MROI) in New Mexico. Current work focuses on MROI science-combiner instrumentation, fringe tracking, and light source/alignment systems for the beam train. He also holds an EPSRC grant (with Haniff and Young) on machining metre-sized gratings with nanometre precision for ELT high-resolution spectrographs. He is President of the Scientific Council of the European Interferometry Initiative.