1.25 inch Svbony 66 degree astronomy eyepieces for night sky telescope viewing The edges of the optics are blackened for increased contrast, and prevent internal reflections. Anti-reflection fully multi-coated optics ensure bright and clear high-images at any magnification, with true color rendition.
 
MODEL
F9157B
Focal Length
9mm
Barrel Size
1.25"
Eye Relief
16mm
Apparent Field of View
66°
Filter Threads Standard
1.25" Filter
Coating
Fully Multi-Coated
Structure Design
6-elements in 4 groups
Rubber Eye Guard
Yes