Astrophotography Accessories 131mm Series Doublet Separated Lenses for Refractive Astronomical Telescope Optical Lens Group(D131F1200 Green Film)

Material: Optical GlassLens Diameter: 131mmFocal Length: 1200mm (Green Film/ Blue Film) 700mm( Green Film/ Blue Film) Combined image quality: 1 / 4-1 / 8Diameter tolerance: + 0 / -0.12 mmCenter thickness tolerance: ± 0.2mmFocal length tolerance: ± 0.1%Finish: 60/40Off-centre: 1 'Used for astronomical telescope objectives, finder and collimation objective LensGreen Film: Four-sided multilayer wideband film (400-700nm)Package List:1 set Glass Lenses with partition ring

• Precision-ground surfaces maintain ±0.1% focal length accuracy and 60/40 surface finish.
• Features 131mm diameter optical glass lenses with 1200mm/700mm focal length options.
• Four-sided anti-reflective coating reduces glare by 85% compared to standard lenses.
• Discover a wide selection of telescope must-haves, including various eyepieces, Barlow lenses to double your magnification, and moon filters for comfortable lunar viewing.
• Our team will provide 24-hour support to help you choose the right accessories and is always committed to ensuring your satisfaction with every product.