Omegon Filters Pro SII 7nm Filter 1.25"

Engineered to enhance the astrofotography of SII-rich regions, this filter selectively permits emissions from ionized sulphur atoms at 672 nanometers to pass through, elevating contrast levels and enriching your celestial imagery. When combined with complementary filters, ambitious astrophotographers can capture breathtaking pictures, even from the illuminated skies of urban environments.

Key features at a glance:

• Special coating ensures optimal contrast and high transmission.
• Ideal for monochrome cameras when used alongside OIII and H-alpha filters.
• Narrow band filter with a bandwidth of 7 nanometers precisely isolates sulphur atom emissions.
• Effectively blocks artificial illumination.
• Suitable for telescopes with an aperture of 8 inches or more.
• Compatible with astronomy CCD cameras and astro-modified DSLR cameras.

The Omegon SII filter serves as a specialized CCD filter, enhancing the contrast between celestial objects and the backdrop of the night sky. Whether capturing stellar nurseries or planetary nebulae, this filter excels in both urban and rural settings. It isolates SII emissions, accentuating the vivid red hues of nebular structures, including renowned examples like the Orion Nebula and the Lagoon Nebula.

With its narrow full width at half maximum of just 7 nanometers, this filter ensures high transmission within the single ionized sulphur spectrum, further intensifying contrast compared to broader band filters.

Specifications:

Mount Material: Aluminium

Telescope Connection: 1.25"

Frame Size: 1.25"

Central Wavelength (nm): 672

Half-Value Width (nm): 7

Series: Pro

Type: Line Filter

Anti Light-Pollution: Yes

Suitable for Hydrogen Nebulae: No

Suitable for Planetary Nebulae: Yes

Suitable for Comets: No

Suitable for Central Stars: No

Suitable for Supernova Remnants: Yes

Useful for Photographs: Yes

Visually Useful: No