Optolong Sulfur II / S-II Narrowband (3nm) Nebula CCD Filter - 36mm Round Unmounted
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Original manufacturer description below. Improved description/specifications coming soon.
Narrowband SII CCD 3nm filter (Sulfur II for CCD) is designed for nebula observation allowing 3nm bandwidth of light centered on a wavelength of 672nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).
Features:
- Give you higher contrast and greater detailed viewing
- Decrease background noise and improve the contrast of objects
- Increase the faint nebula signal to make it brighter
Other Information
- Country of Manufacture: China
Original manufacturer description below. Improved description/specifications coming soon.
Narrowband SII CCD 3nm filter (Sulfur II for CCD) is designed for nebula observation allowing 3nm bandwidth of light centered on a wavelength of 672nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).
Features:
- Give you higher contrast and greater detailed viewing
- Decrease background noise and improve the contrast of objects
- Increase the faint nebula signal to make it brighter
Original manufacturer description below. Improved description/specifications coming soon.
Narrowband SII CCD 3nm filter (Sulfur II for CCD) is designed for nebula observation allowing 3nm bandwidth of light centered on a wavelength of 672nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).
Features:
- Give you higher contrast and greater detailed viewing
- Decrease background noise and improve the contrast of objects
- Increase the faint nebula signal to make it brighter
Other Information
- Country of Manufacture: China