Azure Spy High-Precision Cemented Achromatic Doublet Lens, Ø83 mm, Focal Length 400 mm – Telescope Grade, Green Film Coated

The Azure Spy High-Precision Achromatic Doublet Lens is engineered for telescope-grade performance and advanced optical applications, delivering outstanding clarity and precise color correction. With a large 83 mm clear aperture and an extended 400 mm focal length, this precision cemented doublet offers exceptional light-gathering power, sharp resolution, and distortion-free imaging across the visible spectrum.

Constructed from premium crown and flint optical glass, the achromatic doublet design minimizes chromatic and spherical aberrations, making it ideal for astronomy telescopes, astrophotography setups, and research-grade optical systems. Its large aperture combined with a balanced focal length ensures bright, high-contrast images suitable for both observational and imaging applications.

The lens features an advanced green film anti-reflective coating on its optical surfaces, which enhances light transmission, reduces unwanted reflections, and ensures brighter, sharper, and more accurate results under both daylight and low-light observing conditions.

Key Specifications:

• Brand: Azure Spy

• Type: Cemented Achromatic Doublet Lens

• Clear Aperture (Ø): 83 mm

• Focal Length: 400 mm

• Coating: Green Film Anti-Reflective Coating

• Glass Type: Crown & Flint Optical Glass (Precision Bonded)

• Optical Performance: Superior chromatic aberration correction, telescope-grade clarity, high-contrast imaging

• Applications: Astronomy telescopes, astrophotography, precision imaging, laser optics, and scientific instruments

The Azure Spy Ø83 mm, 400 mm Achromatic Doublet Lens is the ideal solution for astronomers, astrophotographers, and researchers who demand large-aperture, long focal length optics for high-performance telescope objectives and scientific-grade instruments.