Optolong Sulfur II / S-II Narrowband 2"
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Product details
| Management number | 9581109 | Release Date | 2025/09/05 | List Price | $55.71 | Model Number | 9581109 | ||
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The Optolong S-II (Sulfur-III) extra narrowband filter is designed to improve the visibility of various deep sky objects. It does this by:
Selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lighting (including mercury vapor lamps, both high & low pressure sodium vapor lights, and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow)).
Allowing 6.5nm bandwidth of light centered on a wavelength of 672nm to pass through, which corresponds to SII emission lines.
| Category | Electronics > Cameras & photography > Camera Filters |
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| Size | N/A |
| Brand | None |
| Condition | Good |
Decorative Pillows
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