SPECIFICATION :
- Name: ZWO New narrowband 36mm filter
- Size: D=36mm
- Thickness: 2mm
- FWHM:7±0.5nm
- Glass Thickness 2.0+/-0.03 mm (31mm/36mm)
- 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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