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Optolong Filters Venus U-Filter 2''

206.76 CHF

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The Optolong Venus-U filter facilitates the capture of photographs, CCD, or video images in the UV-A spectrum (320-400 nm), allowing for the observation of Venus' cloud structures.

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Optolong Filters UHC Filter, 2"

118.15 CHF

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Mount Material: Aluminum

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Optolong Filters UBVRI set photometric 2''

570.46 CHF

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This UBVRI photometric filter set comprises five round mounted filters, available in both 1.25" and 2" sizes: ultraviolet (U), blue (B), visual (V), red (R), and infrared (I).

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Optolong Filters UBVRI set photometric 1.25''

474.46 CHF

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This UBVRI photometric filter set, available in both 1.25" and 2" round mounted formats, encompasses five filters: Ultraviolet (U), Blue (B), Visual (V), Red (R), and Infrared (I).

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Optolong Filters SII Filter 2"

184.43 CHF

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Mount Material: Aluminum

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Optolong Filters SII Filter 1.25"

114.46 CHF

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Mount Material: Aluminum

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Optolong Filters SII 3nm 2"

712.61 CHF

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SII Filter: Designed specifically for nebula photography, the narrowband S-II 7nm filter selectively transmits light at a wavelength of 672nm, featuring a bandpass of 3nm.

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Optolong Filters SHO Filter Kit 2"

568.4 CHF

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Narrowband filters enhance contrast by selectively permitting specific light wavelengths, such as those corresponding to hydrogen (H-alpha at 656nm), oxygen (OIII at 501nm), sulfur (SII at 672nm), and more, to pass through while blocking others.

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Optolong Filters SHO Filter Kit 1,25"

417.07 CHF

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Narrowband filters enhance contrast by permitting only specific light wavelengths corresponding to certain spectral lines, such as hydrogen (H-alpha at 656nm), oxygen (OIII at 501nm), sulfur (SII at 672nm), among others.

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Optolong Filters OIII 3nm 2"

356.18 CHF

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The OIII Filter: This narrowband OIII 3nm filter is specifically crafted for observing nebulae. It allows a 3nm bandwidth of light centered on a wavelength of 500nm, corresponding to OIII emission lines, while effectively blocking out all other light.

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Optolong Filters LRGB Filter-Set 1,25

166.09 CHF

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The LRGB filter set is essential for capturing colorful images of the night sky using monochrome CCD cameras. This set includes four filters designed to produce a full-color image by combining different spectral channels.

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Optolong Filters L-Ultimate 1,25"

206.69 CHF

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This 3nm dual-band filter is meticulously crafted to significantly mitigate the impact of light pollution while isolating the emissions from nebulae into H-Alpha (red) and OIII (green-blue) wavelengths. By blocking light pollution and enhancing the signal from nebulae, it effectively darkens the sky background, providing optimal conditions for astrophotography. 

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Optolong Filters L-Pro Filter 77mm

228.84 CHF

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This filter is designed to enhance the contrast of deep-sky objects and reduce the impact of sky background interference, particularly in light-polluted areas. Achieving this involves a sophisticated transmission characteristic that allows the lines of deep-sky objects to pass while suppressing various sources of light pollution, including the atmospheric oxygen emissions responsible for "skyglow."

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Optolong Filters L-Pro Clip Sony Full Frame

191.93 CHF

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This filter is engineered to enhance the contrast of deep-sky objects while reducing the interference from sky background. Its intricate transmission characteristics selectively allow the passage of deep-sky object lines while suppressing various sources of light pollution, including the unwanted atmospheric oxygen emissions causing "skyglow." Particularly effective in light-polluted areas, it serves both visual and photographic purposes.

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Optolong Filters L-Pro Canon EOS R Clip

190.08 CHF

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In suburban regions with minimal light pollution, Optolong's L-Pro filter achieves excellent color balance, thanks to its innovative multi-bandpass design.

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Optolong Filters L-Pro 2''

142.09 CHF

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The Optolong L-Pro nebula filter opens up possibilities for astrophotography in urban environments, delivering exceptional results. It significantly boosts contrast and extends exposure times by approximately threefold for DSLR, color, and monochrome astro cameras.

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Optolong Filters L-Pro 1.25''

103.34 CHF

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This filter from Optolong, the L-Pro nebula filter, brings astrophotography to urban areas with remarkable results. It significantly enhances contrast and extends exposure times by approximately threefold for DSLR, color, and monochrome astro cameras.

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Optolong Filters L-eNhance APS-C EOS Clip

206.69 CHF

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The L-eNhance dual-band pass filter enables nebula photography with DSLR cameras while effectively minimizing light pollution.

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Optolong Filters L-eNhance 2"

184.35 CHF

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The L-eNhance dual-band pass filter empowers color cameras to capture stunning nebula photography while effectively combating light pollution.

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Optolong Filters H-alpha 3nm 2"

356.18 CHF

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The H-alpha filter selectively transmits light at a wavelength of 656nm, making it the premier choice for narrowband H-alpha astrophotography.

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Optolong Filters Filter L-eNhance 1.25

140.25 CHF

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The L-eNhance dual-band pass filter revolutionizes nebula photography with color cameras while effectively mitigating light pollution.

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Optolong Filters Clip Filter for Nikon Full Frame L-Pro

190.08 CHF

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This filter enhances the contrast of deep-sky objects while reducing the brightness of the sky background. Achieving this involves a complex transmission characteristic that allows the spectral lines of deep-sky objects to pass while suppressing various sources of light pollution. It effectively diminishes the unwanted sky background, known as "skyglow," caused by oxygen emissions in the atmosphere. 

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Optolong Filters Clip Filter for Canon EOS FF L-Pro

190.08 CHF

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This filter is designed to enhance the contrast of deep-sky objects while minimizing the brightness of the sky background. Achieving this involves a sophisticated transmission characteristic that permits the spectral lines of deep-sky objects to pass through while suppressing various sources of light pollution. Additionally, it reduces the unwanted sky background resulting from atmospheric oxygen emissions, known as "skyglow.

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Optolong Filters Clip Filter for Canon EOS APS-C L-Pro

175.31 CHF

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This filter is designed to enhance the contrast of deep-sky objects while reducing the brightness of the sky background. It achieves this through a sophisticated transmission profile that allows the spectral lines of deep-sky objects to pass through while suppressing various sources of light pollution. 

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