ToupTek SHO narrowband (6.5 nm) filter set (2") offers unbeatable value for astrophotographers dedicated to narrowband imaging. The filter set enables detailed imaging of astronomical objects, such as emission nebulae, in the Hydrogen-alpha (Ha), Oxygen-III (OIII) and Sulfur-II (SII) emission lines. With a passband of just 6.5 nm, these filters effectively reduce the effects of urban light pollution.
A key feature of the ToupTek SHO narrowband filter set is its exceptionally narrow 6.5 nm bandwidth, ensuring maximum contrast and detail. The filters are manufactured from special quartz-based optical glass with high purity and thermal stability. The IAD surface coating provides a more uniform, corrosion-resistant finish than conventional vacuum deposition. These features guarantee outstanding image quality and a long service life.
Key features of the filter set:
- Passband bandwidth: 6.5 nm
- Filter size: 2"
- H-alpha central wavelength: 656.3 nm
- SII central wavelength: 671.6 nm
- OIII central wavelength: 500.7 nm
- Transmission: >90%
- Coating: IAD (Ion Assisted Deposition) and anti-reflective coating
- Material: Quartz optical glass
- Blackened filter edges
The ToupTek narrowband filter set's precise construction and high-quality materials ensure durability and reliability, backed by ToupTek's many years of manufacturing experience.