Baader UBVRI Bessel Filter Set Photometric Filters 36mm

Product Overview

The new generation of Baader Planetarium filters is engineered specifically for precision scientific imaging and optimized for modern CMOS and CCD sensors. These UBVRI Bessel photometric filters deliver unmatched performance and durability, designed to meet the demands of both professional astronomers and serious researchers.

Key Features

• CMOS-Optimized Coatings: Tailored for compatibility with high-sensitivity imaging sensors

• Reflex-Blocker™ Technology: Minimizes halos and internal reflections—even in challenging optical configurations

• Parfocal Consistency: Maintains identical thickness to standard filters for accurate focus alignment

• Blackened Filter Edges: Eliminates edge reflections; includes a black outer rim to indicate the telescope-facing side

• Individually Coated Filters: Each filter is coated and sealed individually (not cut from a pre-coated sheet), ensuring long-term stability

• Life-Coat™ Technology: Advanced hard coatings provide long-lasting, non-aging performance—even in extreme conditions

Technical Specifications

• Product Name: Baader UBVRI Bessel Filter Set (31 mm, Unmounted)

• SKU: 2961752

• EAN: 4047825050687

• Manufacturer: Baader Planetarium

• Net Weight: 0.02 kg

Optical Properties

• AR Coating: Reflex-Blocker™ hard-coated, plane-optically polished

• Filter Type: Bandpass (Bessel UBVRI)

• Transmission: Matches Bessel transmission curves

• Suitable for f/ratios: f/15 to f/1.8

Mechanical & Usage Details

• Filter Size: 36 mm round, unmounted

• Filter Thickness: 2 mm (without cell)

• Usage: Optimized for CMOS, CCD, and photometric UBVRI imaging

• Set: Includes all five filters – U, B, V, R, and I bands

• Special Feature: Covered under Baader’s Life-Coat™ warranty for longevity