Azure Spy High-Precision Cemented Achromatic Doublet Lens, Ø83 mm, Focal Length 525 mm – Telescope Grade, Green Film Coated

The Azure Spy High-Precision Achromatic Doublet Lens is built for serious astronomical observation and scientific-grade optical systems, delivering exceptional clarity, resolution, and color correction. With a large 83 mm clear aperture and a long 525 mm focal length, this cemented doublet lens provides powerful light-gathering capability, sharp imaging, and distortion-free performance across the visible spectrum.

Crafted from premium crown and flint optical glass, the achromatic doublet design minimizes both chromatic and spherical aberrations, ensuring high-contrast, true-color results even at higher magnifications. The combination of large aperture and extended focal length makes this lens highly suitable for telescope objectives, astrophotography setups, and research-grade optical instruments.

To maximize optical efficiency, the surfaces are treated with a green film anti-reflective coating, which boosts light transmission, reduces reflections, and enhances image brightness and contrast under challenging low-light conditions—ideal for deep-sky astronomy and precision imaging.

Key Specifications:

• Brand: Azure Spy

• Type: Cemented Achromatic Doublet Lens

• Clear Aperture (Ø): 83 mm

• Focal Length: 525 mm

• Coating: Green Film Anti-Reflective Coating

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

• Optical Performance: Long focal length, superior chromatic aberration correction, telescope-grade clarity

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

The Azure Spy Ø83 mm, 525 mm Achromatic Doublet Lens is the perfect choice for astronomers, astrophotographers, and optical engineers seeking large-aperture, long focal length optics for advanced telescope objectives and research applications.