ZWO LRGB filter set 1.25 inches

ZWO LRGB filter set 1.25 inches for ASI 1600 MM Mono is specially matched to the sensor response of the ZWO ASI 1600 MM (cooled and uncooled). The set includes four parafocal interference filters: Luminance (UV/IR-cut), Red, Green and Blue. Thanks to the thin-film coating (over 92 % transmission) and precise color weighting, you get maximum sharpness, contrast and true-to-life colors from deep-sky shots as well as planetary photography.

Key benefits

✓ Sensor-matched: optimized band cross sections for the ASI 1600 MM → more efficient stacking, less noise
✓ UV/IR-cut L-filter: blocks distorting UV/IR light, delivers sharper star edges
✓ Parfocal: no refocusing at filter change → fast workflow
✓ Interference Engineering: true thin-film filters, not color films; >92 % light transmission
✓ Vignette-free at f/5 and slower; use at f/4 (or faster) in conjunction with a ZWO filter wheel (10 mm filter-to-sensor) for borderless images
✓ Multi-coating on both sides: minimizes reflections and halos around bright stars

Practical application

Use the cooled ASI 1600 MM to take low-noise LRGB deep-sky photos of nebulae, galaxies and clusters. Do you use the uncooled version? Then you benefit from very short exposures for planetary shots with natural colors. The parafocal construction saves time and prevents focusing errors between the individual color channels.

Specifications (brief)

• Size: 1.25 inches, mounted
• Type: interference filters (L, R, G, B)
• Transmission: >92 %
• Glass thickness: 1.85 mm
• Coating: Full multilayer, anti-reflection
• Parfocal: Yes
• Housing: Anodized aluminum