| Weight | 0.2 kg |
|---|---|
| Dimensions | 7.5 × 7.5 × 6 cm |
Brand: ZWO 
Camera Accessories, Filters
Camera Accessories, FiltersNew narrowband 2-in filter set 7nm Ha, SII, OIII
ر.ع.284.700
These new narrowband 2″ filters reduce the transmission of certain wavelengths of light, specifically those produced by artificial light.
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- FWHM：7±0.5nm
- Fine-optically polished to ensure accurate 1/4 wavefront over the both surfaces
- About 90% transmission at H-alpha line 656nm (H-Alpha filter )
- About 90% transmission at SII line 672nm (SII filter )
- About 90% transmission at major OIII line 500nm (OIII filter )
- Infrared wavelength 700-1100nm cut-off
- <0.1% transmission of off-band, OD3(Optical Density)
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