SPIE Astronomical Telescopes + Instrumentation 2026 will be held from 5th - 10th July 2026 at Bella Centre in Copenhagen, Denmark. This is a major event for the astronomy and instrumentation community. It is held biennially and brings together researchers, engineers, and industry professionals from around the world to discuss the latest advancements in astronomical telescopes and instrumentation. It will feature a wide range of technical presentations, posters, and exhibits on topics such as: Ground-based and space-based telescopes, Astronomical instrumentation, Adaptive optics, Data analysis and software Observatory operations, etc. It is a great opportunity to learn about the latest developments in the field, network with colleagues, and see the latest products and services from leading vendors.