Sky-Watcher Emerald 9 mm 82° Eyepiece (Sky-Watcher, SKU: SW-5343) is a wide-angle 1.25" eyepiece designed for observing deep-sky objects, the Moon and planets. The 9 mm focal length combined with an 82° apparent field of view provides higher magnification while maintaining a very wide image, which is especially useful for observing star clusters, nebulae and finer details in planetary objects. The Emerald series combines a solid optical and mechanical design aimed at high contrast and good image correction.

Key features

• wide-angle eyepiece with 9 mm focal length
• very large 82° apparent field of view
• optical design with 7 elements in 4 groups
• hybrid optical design
• FMC multicoatings
• 8 mm eye relief
• fold-down eyecup for improved observing comfort
• 1.25" barrel compatible with standard focusers
• well suited for observing nebulae, star clusters, the Moon and planets

Box contents

• Sky-Watcher Emerald 9 mm 82° eyepiece
• eyepiece pouch

Technical specifications

• item number: SW-5343
• focal length: 9 mm
• apparent field of view: 82°
• optical design: hybrid
• eye relief: 8 mm
• number of elements / groups: 7 / 4
• coatings: FMC
• eyecup: fold-down
• barrel size: 1.25"
• warranty: 24 months

The Sky-Watcher Emerald 9 mm 82° is a versatile higher-magnification eyepiece that combines a wide apparent field of view with good image correction and comfortable handling for many types of astronomical observation.