Azure Spy High-Precision Cemented Achromatic Doublet Lens, Ø73 mm, Focal Length 275 mm – Telescope Grade, Green Film Coated

The Azure Spy High-Precision Achromatic Doublet Lens is crafted for demanding optical applications that require large aperture performance with excellent color correction and image clarity. With a 73 mm clear aperture and a 275 mm focal length, this cemented doublet lens offers exceptional light-gathering power, sharp resolution, and superior chromatic aberration control across the visible spectrum.

Engineered from premium crown and flint optical glass, the achromatic doublet construction effectively reduces spherical and chromatic aberrations, ensuring distortion-free, high-contrast imaging. The larger aperture makes this lens ideal for telescope objectives, astrophotography setups, and high-precision scientific instruments, where brightness and detail are critical.

To optimize performance, the optical surfaces are treated with an advanced green film anti-reflective coating, which enhances light transmission, minimizes reflections, and delivers brighter, high-contrast images even under low-light or high-magnification conditions.

Key Specifications:

• Brand: Azure Spy

• Type: Cemented Achromatic Doublet Lens

• Clear Aperture (Ø): 73 mm

• Focal Length: 275 mm

• Coating: Green Film Anti-Reflective Coating

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

• Optical Performance: Large aperture, superior color correction, telescope-grade clarity

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

The Azure Spy Ø73 mm, 275 mm Achromatic Doublet is the perfect choice for astronomers, optical engineers, and research professionals who require large-aperture precision optics for advanced telescope objectives and scientific applications.