ZWO line filter set 2 inch includes three narrowband interference filters (H-Alpha 656 nm, S II 672 nm, and O III 500 nm) that suppress light pollution and significantly enhance the contrast of faint nebulae. These filters fit in a low-profile 2-inch filter holder and are parfocal with all ZWO filters, eliminating the need to refocus when switching filters.
Key benefits
✓ Three narrowband filters for H-Alpha, S II, and O III with 7 nm bandwidth
✓ Enhances contrast of hydrogen nebulae, planetary nebulae, and supernova remnants
✓ Parfocal design saves time in LRGB or narrowband workflows
✓ Easy to mount in 2-inch low profile filter holder
✓ Supplied in sturdy plastic storage case for safe transport
Technical specifications
- Format: 2 inch filters in filter holder
- Passbands: H-Alpha 656 nm, S II 672 nm, O III 500 nm
- Bandwidth (HWB): 7 nm
- Transmission: 80%
- Housing: aluminum
- Coating: multi-layer interference
Practical application
Use this filter set with a monochrome ZWO ASI camera and a 2-inch filter wheel. Capture faint H II regions, planetary nebulae, and supernova remnants with exceptional detail and contrast, even under urban light pollution.
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