Optolong LRGB + HSO 36 mm (SKU: OPL-LRGBNB-36)

The Optolong LRGB + HSO 36 mm is a comprehensive package consisting of seven rimless astronomical filters designed specifically for professional astrophotography setups.

Each filter within the LRGB palette boasts exceptional efficiency, surpassing 95% transmission in the maximum transmission band. With high-quality glass substrates and a full multilayer coating, these filters produce images that are incredibly vivid and contrasted. Additionally, the G and R filters have been carefully designed to effectively eliminate signal interference from sodium lamp spectral lines, which are a primary source of light pollution.

The HSO palette comprises narrowband filters that excel in capturing stunning photos of emission nebulae, including the renowned Pillars of Creation. Furthermore, the narrow half-width of the Hα, S II, and O III bands enables astrophotographers to collect valuable photographic material even under challenging conditions like a full moon.

All filters included in this kit are equipped with a full multilayer anti-glare coating that is applied using advanced ion implantation techniques. This not only ensures exceptional optical performance but also enhances durability, making the filters highly resistant to scratches.

Key Features of the Optolong LRGB + HSO 36 mm Filter Set:

Premium LRGB and HSO filters manufactured using high-quality glass from Schott, a renowned company.

Complete multilayer coating that eliminates glare and provides excellent protection against scratches.

Balanced weights for the RGB palette channels.

Enhanced separation of passbands in the R and G filters, effectively blocking sodium lamp emission lines.

Technical Specifications:

• Filter Types: LRGB, HSO
• Filter Diameter: 36 mm
• Transmission for LRGB Bandwidth: 95%
• Transmission beyond LRGB Bandwidth: 0.1%
• Optical Density Equivalent beyond LRGB Bandwidth: OD3
• IR Cut-off in Luminance Channel: 700 - 1100 nm
• Hα Passband Midpoint: 656.3 nm
• Hα Half Bandwidth (FWHM): 7 nm
• Transmission for Hα Band: 85%
• S II Passband Midpoint: 672 nm
• S II Half Bandwidth (FWHM): 6.5 nm
• Transmission for S II Band: 80%
• O III Passband Midpoint: 500 nm
• O III Half Bandwidth (FWHM): 6.5 nm
• Transmission for O III Band: 80%
• Substrate: Schott optical glass
• Filter Thickness: 2 mm
• Surface Quality Index: 60/40
• Surface Finish: Polished
• Anti-reflective Coating: Full Multilayer Coating (FMC)
• RMS Execution Accuracy: λ / 4

Elements Included in the Set:

• Optolong UV / IR-cut 36 mm Filter
• Optolong R-CCD 36 mm Filter
• Optolong G-CCD 36 mm Filter
• Optolong B-CCD 36 mm Filter
• Optolong Hα 36 mm Filter
• Optolong S II 36 mm Filter
• Optolong O III 36 mm Filter

Guarantee:

The Optolong LRGB + HSO 36 mm filter set is backed by a 24-month guarantee.