Astronomical Telescope Accessories, Large Aperture Achromatic Objective Lens 131mm Diameter 700mm Focal Length Sky Viewing Astronomical Telescope Accessories,for Used in Astronomy(131F700 S Grenn)

==========High-concerned chemical : NoneModel Number : WJP-131

• Lens edges blackened and internal matte threads effectively suppress stray light and glare, improving image contrast and making faint celestial objects easier to identify.
• This is a large aperture achromatic objective lens with 131mm diameter and 700mm focal length, serving as professional optical accessory for sky-viewing astronomical telescopes.
• With professional achromatic optical structure, it effectively reduces light dispersion and delivers clear imaging for astronomical observation.
• The large aperture design ensures sufficient light transmission, improving viewing effect in dim environments for outdoor stargazing.
• Made of high-quality optical glass with stable structure, it is convenient for installation, accessory replacement and DIY assembly modification.
• With standard size parameters, it fits matched telescope barrels, meeting needs of optical construction and equipment upgrading for astronomy enthusiasts.
• Multi-group multi-element optical glass construction with broadband anti-reflection coating on surfaces, effectively increasing light transmission and reducing reflection loss, delivering bright and sharp imaging.