Orion 5579 1.25-Inch Sulfur-II Extra-Narrowband Filter
Product Description
Orion 5579 1.25-Inch Sulfur-II Extra-Narrowband Filter
- Sulfur-II astrophotography filter allows high-contrast imaging even in light polluted skies
- Filter passes light at 672.4nm wavelength (S-II line) with a narrow bandpass of 7nm
- Very high 90% transmission of S-II light allows stunning astrophotos to be captured in city skies
- 1.25" astrophotography filter made from high-grade glass with dichroic interference and antireflection coatings. Metal filter cell construction.
- Use with Orion O-III and H-alpha extra-narrowband imaging filters for tricolor CCD astrophotography
The S-II filter passes light at the 672.4nm wavelength (the Sulfur-II line in the deep red end of the visual spectrum) with very high 90 percent transmission and a bandpass of 7nm. It complements the Orion H-alpha and Oxygen-III extra-narrowband filters, which together allow advanced tricolor imaging of emission nebulas with the StarShoot Deep Space Monochrome CCD Imaging Camera or other monochrome CCD cameras. So if you're ready to go beyond RGB imaging and capture your favorite nebulas in a revealing new light - no matter how light-polluted your skies -- add our S-II (and O-III and H-alpha) Extra-Narrowband filter to your imaging arsenal! Includes protective plastic case.
Technical Specifications
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