Optolong L-eNhance Light Pollution Dual-Bandpass 2" Imaging Filter

The Optolong L-eNhance 2" Dual-Bandpass Imaging Filter is an astrophotographer’s solution for capturing emission nebulae with clarity and contrast from light-polluted environments. This filter isolates key nebular emissions—Hydrogen Alpha (Hα), Hydrogen Beta (Hβ), and Oxygen III (OIII)—while effectively blocking out the overwhelming glow from urban lighting.

With high transmission rates up to 90%, the L-eNhance filter provides crisp, vibrant imaging of deep-sky targets like the Orion, Lagoon, and Veil Nebulae. It is perfectly compatible with DSLR, mirrorless, and dedicated astronomy cameras. Housed in a rugged 2" threaded cell and built with B270 optical glass and durable anti-reflective coatings, the L-eNhance ensures both performance and longevity for your imaging sessions.

• Filter Type: Dual Narrow Bandpass (Hα, Hβ, OIII)
• Filter Size: 50.8 mm (2")
• Shape: Round
• Insert Style: Threaded (M48 x 0.75)
• Glass Thickness: 1.85 mm B270 optical glass
• Surface Quality: 60/40
• Transmission:
  • H-Alpha: 656.3 nm (12 nm bandwidth)
  • OIII: 495.9 & 500.7 nm (24 nm bandwidth)
• Coating Technology: Ion-assisted multi-layer anti-reflective coatings
• Recommended Use: Emission Nebulae, Light Pollution Reduction
• Compatible With: DSLRs, Mirrorless Cameras, Astronomy Cameras
• Warranty: Optolong – 2 Years

• Optolong 2" L-eNhance Light Pollution Imaging Filter
• Plastic Storage Case with Foam