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Optolong OIII 18nm Filter 1.25"
he substrate of the filter is fine-optically polished to 1/4 wave and maintains less than 30 seconds of parallelism across both surfaces, ensuring supreme clarity and focus. Adhering to the stringent MIL-O-13830 standard, the filter boasts a 60/40 surface quality rating, guaranteeing minimal optical imperfections.Regular price $128.00 USDRegular priceUnit price per -
Optolong H-Beta 25nm Filter 1.25"
Perfect for capturing detailed images of faint and elusive nebulae, such as the Horsehead Nebula and the California Nebula. Enhances the contrast and visibility of nebulae against the night sky, making them more prominent during visual observation.Regular price $140.00 USDRegular priceUnit price per -
Optolong OIII Filter 2 Inch 18nm
This filter is specifically designed to improve the visibility of celestial objects, particularly nebulae. By isolating the emission lines of doubly ionized oxygen (OIII), it enhances the contrast of these objects against the night sky, making them more visible through your telescope.Regular price $158.00 USDRegular priceUnit price per -
ZWO H-Alpha Ha Narrowband Filter 1.25" 7nm
The ZWO H-Alpha Ha Narrowband Filter 1.25" 7nm is primarily used for capturing and observing emission nebulae. By isolating the H-alpha emission line, this filter enables astronomers and astrophotographers to see and photograph structures within nebulae that are often obscured by other wavelengths of light.Regular price $179.00 USDRegular priceUnit price per -
ZWO OIII Narrowband Filter 1.25" (7nm)
It effectively blocks all other light, providing clear and detailed views of nebulae and other celestial objects. Whether you are dealing with light pollution or seeking to enhance the contrast and detail of your images, the ZWO OIII Narrowband Filter is an essential tool for any serious astronomer or astrophotographer.Regular price $179.00 USDRegular priceUnit price per -
ZWO SII Narrowband Filter 1.25" Inch (7nm)
By blocking out unwanted light pollution and skyglow, the ZWO SII Narrowband Filter enhances the visibility of celestial objects, making it an indispensable addition to your astrophotography equipment.Regular price $179.00 USDRegular priceUnit price per -
Askar Duo-Band Narrowband Filter 2" / 1.25"
Allows light at H-alpha (656.3nm) and OIII (495nm) wavelengths to pass through, enhancing the visibility of nebulae and supernova remnants. Offers more than 95% transmission at the key wavelengths, ensuring bright and clear images.Regular price From $189.00 USDRegular priceUnit price per -
Optolong 2" H-Beta Filter 25nm
The Optolong H-Beta Filter 2" 25nm is designed to improve the visibility of nebulae by selectively reducing the transmission of light pollutants. This filter blocks unwanted light from skyglow and streetlights, darkening the background sky and enhancing the contrast of nebulae, such as the Horsehead Nebula and the California Nebula. It is particularly effective for both visual observation and astrophotography, making it an essential tool for any astronomer.Regular price $189.00 USDRegular priceUnit price per -
Askar SII Narrowband (7nm) Filter 2" / 1.25" / 36mm / 31mm
Investing in the Askar SII Narrowband (7nm) Filter is a wise choice for any serious astronomer or astrophotographer. Its ability to isolate specific wavelengths of light and reduce the impact of light pollution makes it an essential tool for capturing stunning images of SII emitting nebulae and other deep-sky objects. The filter's high transmission rate and fine-optical polishing ensure superior performance, providing clear and detailed views of the night sky.Regular price From $199.00 USDRegular priceUnit price per -
Optolong SHO (SII H-Alpha OIII) Filters 2" / 1.25"
Astrophotography enthusiasts seeking to capture the mesmerizing beauty of deep-sky objects will find the Optolong SHO (SII H-Alpha OIII) 6.5nm Filters an invaluable addition to their toolkit. Available in both 2" and 1.25" sizes, these narrowband filters are specifically designed to isolate the key emission lines of Sulfur II (SII), Hydrogen-Alpha (H-Alpha), and Oxygen III (OIII).Regular price From $205.00 USDRegular priceUnit price per -
Optolong H-Alpha 7nm Filter 2" / 1.25"
Achieve high-contrast, detailed images of hydrogen-rich nebulae and other celestial objects. Blocks out artificial light pollution, improving image clarity and detail.Regular price From $209.00 USDRegular priceUnit price per -
Optolong SII Narrowband 6.5nm Filter 2" / 1.25"
The Optolong SII Narrowband 6.5nm Filter is a high-performance astronomical filter designed to enhance deep-sky imaging. Available in both 2" and 1.25" sizes, this filter is specifically engineered to isolate the Sulfur II (SII) emission line at 672nm. By drastically reducing other transmissions, including those responsible for light pollution, this filter allows astrophotographers to capture stunning, high-contrast images of nebulae and other celestial objects.Regular price From $209.00 USDRegular priceUnit price per -
Optolong OIII Narrowband 6.5nm Filter 2" / 1.25"
Astrophotography enthusiasts, meet your next essential tool: the Optolong OIII Narrowband 6.5nm Filter, available in both 2" and 1.25" sizes. This high-quality filter is designed to isolate the Oxygen III (OIII) emission line at 500nm, drastically reducing the impact of light pollution and enhancing the contrast and details of your deep-sky images.Regular price From $209.00 USDRegular priceUnit price per -
Optolong OIII 6.5nm Filter 1.25"
Transform your astronomical observations and astrophotography with the Optolong OIII 6.5nm Filter 1.25". Order now to enjoy clear, high-contrast images of the night sky and capture the beauty of deep-sky objects with unprecedented detail. Click the link below to add this essential tool to your collection today.Regular price $209.00 USDRegular priceUnit price per -
Optolong 2" Inch H-Alpha Filter
Take your astronomical observations and astrophotography to new heights with the Optolong H-Alpha 7nm Filter 2 Inch. Order now to enjoy clear, high-contrast images of the night sky and capture the beauty of deep-sky objects with unprecedented detail. Click the link below to add this essential tool to your collection today.Regular price $279.00 USDRegular priceUnit price per -
Optolong SII Filter 2 Inch 6.5nm
The Optolong SII Filter 2 Inch 6.5nm is designed to isolate the Sulfur II (SII) emission line at 672nm, significantly enhancing the contrast and visibility of deep-sky objects. By blocking unwanted wavelengths, including those from light pollution, this filter ensures that you can capture clear and detailed images of nebulae, supernova remnants, and other emission line objects.Regular price $279.00 USDRegular priceUnit price per -
Optolong 2" OIII 6.5nm Filter
The Optolong 2" OIII 6.5nm Filter is an indispensable tool for astronomers and astrophotographers seeking to capture the intricate details of deep-sky objects. This professional-grade narrowband filter is specifically designed to isolate the Oxygen III (OIII) emission line at 500nm, significantly enhancing the contrast and visibility of celestial phenomena. Whether you are photographing or visually observing nebulae, the Optolong OIII 6.5nm Filter ensures unparalleled performance and clarity by drastically reducing light pollution and other unwanted wavelengths.Regular price $279.00 USDRegular priceUnit price per -
ZWO 2" OIII Narrowband Filter 7nm
It allows a 7nm bandwidth of light centered on a wavelength of 500nm, effectively blocking all other light and significantly reducing light pollution. Approximately 90% transmission at the major OIII emission line of 500nm, ensuring bright and clear images of nebulas.Regular price $299.00 USDRegular priceUnit price per -
ZWO 2" H-Alpha Ha Filter 7nm
This filter is designed for observing and photographing nebulae by isolating the H-alpha emission lines. It is not suitable for general observation of the night sky or planetary observation. For best results, use in conjunction with other narrowband filters for a comprehensive imaging setup.Regular price $299.00 USDRegular priceUnit price per -
ZWO 2" SII Filter 7nm
The ZWO 2" Narrowband SII Filter 7nm is primarily used for capturing and observing emission nebulae. By isolating the SII emission line, this filter enables astronomers and astrophotographers to see and photograph structures within nebulae that are often obscured by other wavelengths of light.Regular price $299.00 USDRegular priceUnit price per -
ZWO SHO 2" Inch Filter Set Kit (Ha SII OIII) Narrowband 7nm
The ZWO SHO 2" Inch Filter Set Kit (Ha SII OIII) Narrowband 7nm is an essential tool for anyone serious about astronomical observation and astrophotography. Their ability to isolate specific wavelengths and reduce light pollution impact makes them invaluable for capturing stunning images of deep-sky objects.Regular price From $299.00 USDRegular priceUnit price per
