The SVBONY F9115A Fine Thread 1.25 inch 0.5x Eyepiece Reducing Lens is an accessory designed for telescopes. It reduces the focal ratio by 0.5x to enhance the field of view.
Product type: Accessories
Compatibility: Telescopes
Material: Optical glass
Key feature: Reduces focal ratio by 0.5x
Color/Variant: Anodised aluminium
Focus: 0.5X
Lens material: Pure optical glass
Thread interface: M28x0.6 pitch (fine thread)
Tube size: 1.25 inch
Total article length (including external thread): 14mm
Total article length (excluding male thread): 11mm
Clear aperture: 22mm
Weight: about 12g
Fits standard 1.25 inch eyepieces
Shortens the focal length to increase the field of view
Reduces the focal ratio of the telescope by 0.5x
Increases the imaging area
Optical lenses help transmit more light
Filters can be fitted and screwed onto the eyepiece or camera at the same time
Anodised aluminium housing
Not recommended for very fast telescopes or very wide angle eyepieces
