Helios Quantum 4 CF & IF Series Observation Binoculars

"Good for deep-sky views".... "The field of view was also noticeably sharper than nearly all the binoculars on test" (Quantum-4 15x70 model) BBC Sky At Night Magazine

High quality waterproof, nitrogen-filled observation binoculars, with individual eyepiece focusing, designed for medium- to-long-range terrestrial and astronomical observations. Incorporating BAK-4 prisms and a fully broadband multi-coated optical system. The 10x60 and 15x70 models feature a Central Focusing (CF) and an integral tripod bush. The larger 20x80, 20x90 and 25x100 models feature Individual Eyepiece Focusing (IF)and a central stabilizing bar with sliding tripod adaptor, for optimum balancing on tripod. High-precision construction using CNC machined metal components. Finished in Black Rubber and supplied in carrying case.