Filter Chroma Luminance 31 mm, unmounted (SKU: CT-27040-31D)

Chroma Luminance 31 mm filter, unmounted (Chroma, SKU: CT-27040-31D) is a luminance filter for LRGB astrophotography with a monochrome camera. It records a broad band of visible light, providing brightness and detail data that can be combined with images taken through Red, Green and Blue filters.

Key features

• capture of the L luminance channel
• broad visible-light passband with suppressed UV and IR transmission
• part of the Chroma LRGB imaging system
• durable hard-sputtered coatings on a single glass substrate

Included items

• filter Chroma Luminance 31 mm, unmounted

Technical specifications

• manufacturer: Chroma Technology
• filter type: L luminance
• center wavelength (CWL): 550 nm
• configuration: unmounted
• shape: round
• glass diameter: 31 mm
• glass substrate thickness: 3 mm
• coatings: hard-sputtered, antireflection
• recommended optical focal ratios: f/4 and slower

The filter enables you to collect object detail for subsequent combination with the RGB color channels.