Astronomical Telescope Accessories, 106mm Optical Glass Focal Length 600mm Dual Separation Double Convex Concave Lens DIY Refractor Telescope Objective Guidscope,for Used in Astronomy(Green Film)

=========High-concerned chemical : NoneFocal Length : 600mm

• 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 lens is 106mm in diameter with 600mm focal length. Its dual separation convex-concave structure fits DIY assembly of refractor telescopes and guide scope objectives.
• Made of premium optical glass, it delivers stable optical path transmission for astronomical imaging applications.
• The dual separation lens structure organizes light convergence well and adapts to telescope modification requirements.
• It can be used as both main objective of refractor telescope and guide scope objective with wide application scenarios.
• Its size matches corresponding inner diameter tubes, suitable for manual assembly and part replacement in astronomical DIY projects.
• 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.