SVBNOY SV227 SII 5nm 2" Filter Narrowband Astronomical Photographic CCD Filter for Deep Sky
The SVBONY Sulful II Extra Narrowband Filter transmits a 5nm bandwidth of light that is centered at 672nm and drastically reduces other transmissions, including wavelengths of light that are responsible for light pollution. This SII filter blocks infrared wavelengths from 700nm to 1000nm so you don't need a separate IR-Cut filter. Due to the narrow bandwidth and high transmission rate of this filter, you will experience a major boost to contrast.
Please Note: This SII filter is NOT for use on the Sun.
Specifications:
Brand: SVBONY
Model: SV227
Size: 2-Inch
Substrate Thickness:1.85mm
Clear Aperture: 44mm
Wavelength Range: 300-1000nm
CWL: 672nm
FWHM: 5nm
Blocking: ≥OD5
Peak transmittance: ≥90%
Surface Quality: 60/40
Surface parallelism: 1/4λ
Thread: M48x0.75
Single Thread: Yes
Net Weight: 12.5g / 0.44oz /0.027lb
Package Includes:
SVBNOY 2" SII 5nm
PP Material Plastic Box
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