List of products by brand Optolong

The Optolong L-eXtreme filter is a dual 7nm bandpass filter designed for astrophotography with one-shot color cameras such as DSLRs, as well as with monochrome CCD cameras. It is particularly well-suited for fast optical systems and offers an affordable solution for amateur astronomers who want to capture rich images of emission nebulae, even under bright, light-polluted skies.

The H-alpha filter is designed to pass light at the 656nm wavelength, making it an excellent choice for narrowband astrophotography. It is ideal for capturing high-contrast images and revealing intricate details within nebulae, even in locations affected by significant light pollution. The filter allows a narrow 7nm bandwidth centered on 656nm, effectively blocking unwanted wavelengths produced by artificial lighting such as mercury vapor and sodium vapor lamps, as well as natural skyglow caused by neutral oxygen emission in the atmosphere.

The Optolong H-alpha 7 nm 2" filter is a high-performance narrowband line filter designed for astrophotography and visual observation of deep-sky objects. It isolates the hydrogen-alpha emission line at 656 nm, significantly enhancing contrast and revealing fine nebular structures, even under strong light pollution. By blocking unwanted artificial and natural skyglow wavelengths, it delivers sharper images with improved detail and background darkness. This filter is particularly well suited for capturing emission nebulae.

The Optolong SHO 3 nm filter set is a professional narrowband filter kit designed for advanced astrophotography. It includes three precision filters — H-alpha, OIII, and SII — each with an ultra-narrow 3 nm bandwidth to maximize contrast and isolate specific emission lines. These filters significantly reduce light pollution and unwanted wavelengths, allowing detailed imaging even under moonlight or in urban environments. The SHO combination enables the creation of dramatic tri-color images similar to those produced by space telescopes.

The Optolong SHO 6.5–7 nm filter set is a versatile narrowband solution designed for astrophotographers who want high contrast and improved performance under light-polluted or moonlit skies. This three-filter set includes H-alpha, OIII, and SII filters, each optimized to isolate key emission lines from nebulae. By transmitting only specific wavelengths and blocking unwanted light, these filters significantly enhance detail and background darkness. They are ideal for long-exposure imaging and allow productive observation even when the Moon is visible.

Optolong NK-Z clip filters are not compatible with all Nikon Z-mount cameras. Please verify compatibility with your specific camera model before purchasing. This filter is designed to enhance the contrast of deep-sky objects while reducing the brightness of the sky background. It works through a sophisticated transmission profile that allows important emission lines from deep-sky objects to pass through while suppressing common sources of light pollution. It also reduces unwanted sky background caused by atmospheric oxygen emissions, often referred to as "skyglow."

The H-alpha filter allows light to pass at a wavelength of 656 nm. It is an excellent narrowband filter for H-alpha astrophotography, delivering high-contrast images and revealing fine nebular details, even in areas affected by strong light pollution.

The L-Synergy is a dual 7 nm narrowband filter designed for use with DSLR cameras, color CMOS sensors, and CCD cameras. It is compatible with telescope systems that have an f-ratio of f/3.3 or slower. Its main advantage is that it allows astrophotography enthusiasts to capture highly detailed images of emission nebulae, even in areas affected by significant light pollution. 

The L2 Dual-Combo Set includes two 7 nm narrowband filters designed for astrophotography. These filters are suitable for use with one-shot color cameras such as DSLRs, as well as monochrome CCD and color CMOS cameras. They are particularly well suited for fast optical systems and also support telescope systems with an f-ratio of f/3.3 or slower. One of the filters in this set isolates the H-alpha and Oxygen III emission lines, maximizing contrast and improving the signal-to-noise ratio when imaging nebulae.