ZWO LRGB 36mm Filter Set

The ZWO LRGB 36mm Filter Set is a premium unmounted filter set designed for astrophotographers using monochrome astronomy cameras. This set includes four 36mm round filters: Luminance (UV/IR Cut), Red, Green, and Blue. Each filter is finely optically polished to ensure accurate 1/4 wavefront, with over 92% transmission at passband :contentReference[oaicite:1]{index=1}.

These filters are equipped with multi-layer anti-reflection coatings and feature a 700–1100nm infrared wavelength cut-off, eliminating the need for a separate IR-cut filter. The precision off-band blocking and a small spectral gap help minimize the effects of light pollution, making them ideal for deep-sky imaging in various conditions :contentReference[oaicite:2]{index=2}.

With a thickness of 2mm, these filters are parfocal, ensuring minimal refocusing when switching between filters. They are compatible with filter wheels that accept 36mm unmounted filters, such as the ZWO EFW7 :contentReference[oaicite:3]{index=3}.

• Filter Size: 36mm unmounted round filters
• Filter Types: Luminance (UV/IR Cut), Red, Green, Blue
• Transmission: >92% at passband
• Coating: Multi-layer anti-reflection coating
• Infrared Cut-off: 700–1100nm
• Thickness: 2mm (parfocal)
• Wavefront Accuracy: 1/4 wavefront
• Compatibility: Suitable for filter wheels accepting 36mm unmounted filters (e.g., ZWO EFW7)

• 1x Luminance (UV/IR Cut) 36mm unmounted filter
• 1x Red 36mm unmounted filter
• 1x Green 36mm unmounted filter
• 1x Blue 36mm unmounted filter
• 1x Protective storage case