Optolong HSO / SHO 3 nm 36 mm (SKU: SHO-3nm-36 / SHO-3-36)

Optolong SHO 3 nm 36 mm Astrophotography Filter Set

The Optolong SHO 3 nm 36 mm Filter Set is the ultimate choice for astrophotographers, specifically designed for use with monochrome cameras and specially modified SLRs. This set, part of the renowned HSO palette, allows you to capture breathtaking images of emission nebulae and remnants of supernova explosions. Thanks to advanced filter production technology, Optolong achieves exceptionally narrow passbands while maintaining high optical efficiency, resulting in stunning visuals reminiscent of the Hubble Space Telescope's images.

These filters are particularly adept at blocking light pollution from sodium and mercury lamps, making them ideal for astrophotography even in urban environments. With a full multi-layer anti-glare coating applied through ion implantation techniques, these filters ensure optical excellence, remarkable durability, and scratch resistance. It's important to note that the 36 mm filters are frameless, enhancing their versatility and ease of use.

Key Features of the Optolong SHO 3 nm 36 mm Filter Set:

• Ultra-Narrow Passbands: Hα, S II, and O III bands with a remarkable half-width of only 3 nm.
• Anti-Glare Coating: Full multi-layer coating that eliminates glare and protects against scratches.
• Stable Transmission: Band maxima remain stable regardless of ambient temperature changes.
• Effective Light Pollution Elimination: Effectively blocks light pollution and minimizes skyglow.

Technical Specifications:

• Filter Type: HSO
• Filter Diameter: 36 mm
• Filter Thickness: 2 mm
• Hα Line Passband Midpoint: 656.3 nm
• Hα Line Half Bandwidth (FWHM): 3 nm
• Hα Line Band Transmission: 85%
• S II Line Passband Center: 672 nm
• S II Line Half Bandwidth (FWHM): 3 nm
• S II Line Band Transmission: 85%
• O III Line Passband Center: 500 nm
• O III Line Half Bandwidth (FWHM): 3 nm
• O III Line Band Transmission: 85%
• Blocked Bands: Mercury Lamps (435.8 nm, 546.1 nm, 577 nm, 578.1 nm), Sodium Lamps (598 nm, 589.6 nm, 615.4 nm, 616.1 nm)
• Anti-Reflective Coating: Full Multi-Layer Coating (FMC)
• Frame: Absent

Set Components:

• Optolong Hα 36 mm Filter
• Optolong S II 36 mm Filter
• Optolong O III 36 mm Filter

Guarantee:

The Optolong SHO 3 nm 36 mm filter set comes with a 24-month guarantee, ensuring peace of mind and satisfaction with your purchase.