Astronomical Telescope Accessories, 154mm Calibre F750/F1200mm Cemented Doublet Lens DIY Astronomical Telescope HD Coating Achromatic Large Aperture Objective,for Used in Astronomy(154F750Green)

=========High-concerned chemical : None

• 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 objective lens has a 154mm caliber with optional focal lengths of F750 and F1200. The large aperture design is suitable for DIY assembly, modification and overall construction of refracting astronomical telescopes.
• With integrated cemented doublet structure, the professional achromatic design reduces light dispersion effectively and converges light steadily to optimize astronomical imaging.
• Equipped with high-definition anti-reflection coating, it improves light transmittance and reduces stray light interference for smoother and more stable light transmission.
• Made of high-transmittance optical glass with solid structure and standard size parameters, it is convenient for installation, fixing and accessory replacement.
• It matches corresponding special telescope barrels, satisfying needs of deep-sky observation, homemade device making and optical path construction 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.