Bintel UHC Nebula Filter – 1.25"

Bintel UHC Narrowband Filter – 1.25"

The Bintel UHC Narrowband Filter is designed to dramatically improve contrast when visually observing emission nebulae, especially from light-polluted suburban and city skies. By selectively passing key nebular emission lines while blocking common artificial light sources, it helps faint objects stand out more clearly against a darker background sky.

Unlike broadband filters, the UHC’s narrower passband delivers stronger contrast on classic nebulae such as The Orion Nebula, The Carina Nebula, The Lagoon Nebula and so many more. Even under urban lighting, brighter nebulae become easier to detect, while dark-sky observers will appreciate the added structure and subtle detail revealed.

Advanced multilayer dielectric coatings provide excellent transmission (over 97% across the passband) while fully blocking major light pollution lines. This high efficiency makes the filter particularly effective with small to medium aperture telescopes. Ion beam–hardened coatings ensure long-term durability and scratch resistance.

Key Features

• Ultra High Contrast (UHC) narrowband design for visual observing

• Strong enhancement of emission nebulae contrast

• High transmission at H-beta (486.1nm) and OIII (495.9nm & 500.7nm)

• Over 97% transmission across the passband

• Effectively blocks common light pollution wavelengths

• Durable multilayer dielectric, ion beam–hardened coatings

• Standard 1.25" filter thread fits most eyepieces

Specifications

• Type: UHC light pollution suppression filter

• Size: 1.25" (standard thread)

• Material: Optical glass with aluminium cell

• Application: Screws directly into the barrel of 1.25" eyepieces

An essential visual filter for anyone who enjoys observing nebulae, the Bintel UHC Narrowband Filter delivers noticeably darker skies, brighter nebulae, and more rewarding views, especially where light pollution would otherwise limit what you can see.