UCL Observatory (UCLO) UCL's Astronomical Observatory in Mill Hill is one of the best-equipped astronomical facilities for student training and research in the UK. UCL's Astronomical Observatory in Mill Hill. A glance at the Observatory's telescopes. A quick look at the night skies captured, for more images. Lucie Cohen's artistic vision of the Observatory. Study Here Astrophysics is one of the most interesting and exciting subjects to study, and developing an understanding of the nature and physics of the Universe is deeply rewarding. Public & School Visits Tours and lectures exciting young minds about the challenges and rewards of a career in Astrophysics and space sciences. Research Many of today's large research telescopes and space missions are being used in research projects by scientists who made their first steps in astronomy here.