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Why settle for anything less than the pinnacle of astrophotography precision? The 31mm Round 3.5nm Ultra-Narrowband H-alpha CCD Imaging Filter, unmounted, is a testament to the fusion of durability and high-quality innovation that Baader Planetarium is renowned for. This filter is meticulously crafted for astrophotographers who demand the utmost in image clarity and detail when capturing the elusive beauty of the cosmos.Designed to work seamlessly with optical systems ranging from f/10 to f/3.5, this filter is a gateway to the extraordinarily narrow 3.5nm H-alpha world. It significantly enhances contrast, allowing even the faintest of stars to emerge with clarity, and provides an increased signal of the faintest nebulae details that are often lost with lesser filters. The result is a breathtaking view of the night sky, with celestial objects revealed in stunning detail.The production of such an ultra-narrowband filter requires exceptional coating uniformity and precise control of the center-wavelength (CWL), ensuring that only the H-alpha wavelength is transmitted. This level of precision is achieved through advanced manufacturing techniques, resulting in a filter with a full width at half maximum (FWHM) that is finely tuned for astrophotography excellence.Reliable and effective, this filter is a crucial tool for any astrophotographer looking to push the boundaries of their craft. Whether you're capturing the intricate structures of a distant nebula or the delicate tracery of a star cluster, the 31mm Round 3.5nm Ultra-Narrowband H-alpha CCD Imaging Filter ensures that your images will be imbued with the depth and detail that only true specialization can provide. Embrace the innovative technology that sets this filter apart and let your astrophotography ascend to celestial heights.

What sets the 1.25" Oxygen III Narrowband Filter apart is its precision-engineered capability to enhance your celestial viewing experience. This high-quality filter meticulously isolates the two doubly-ionized oxygen lines at 496 and 501nm, which are key emissions from planetary and emission nebulae. By doing so, it provides an unparalleled contrast that dramatically distinguishes the deep blackness of the night sky from the delicate photons of OIII light. This results in exceptionally detailed observations of astronomical phenomena such as the Veil, Ring, Dumbbell, Crescent, and the illustrious Orion nebulae.Crafted by Celestron, a leader in optical innovation, each filter boasts a durable, ultra-hard coating. This advanced vacuum-deposited layer is designed with precision to block the entire visual spectrum ranging from 400 to 700 nm. This innovative approach ensures the elimination of unnatural colored halos that often plague bright stars when viewed through less sophisticated OIII filters.The effectiveness of this filter makes it a versatile tool for astrophotographers and astronomers alike, seeking to capture or observe the intricate details of the cosmos. Whether you're a seasoned professional or an enthusiastic amateur, the 1.25" Oxygen III Narrowband Filter is an essential addition to your astronomical equipment, enabling you to explore the universe with clarity and precision.

Explore the wonders of the night sky with the Baader Planetarium H-Alpha 7nm Narrowband Filter, a high-quality, durable, and reliable tool specifically designed for astrophotography. This innovative filter delivers unparalleled contrast in deep sky images of H-II regions, all within the shortest possible exposure times. Its narrow 7nm FWHM bandwidth boasts a transmission rate at H-Alpha of over 90%, effectively rejecting light pollution and enhancing your celestial viewing experience. The Baader 7nm H-Alpha filter's high optical quality ensures no loss in sharpness or contrast, allowing you to capture the intricate details of the night sky with precision and clarity.Each substrate of this effective filter is fine-optically polished plane parallel, delivering a smooth and accurate 1/4 wavefront over the entire surface. This unique custom polishing operation sets the Baader filters apart from other standard precision polished filter substrates used by most other filter manufacturers.The coatings on this reliable filter are professionally applied using the most advanced equipment available, ensuring high consistency for bandpass centering and transmission. The ultra-hard ionbeam deposition guarantees the coatings will stand the test of time, never degrading from use or normal cleaning. In the world of astronomy and astrophotography, the Baader Planetarium H-Alpha 7nm Narrowband Filter is a testament to the blend of innovation and quality that Baader Planetarium is renowned for.

For astrophotography enthusiasts seeking to elevate their celestial captures, the Baader Planetarium F/2 Sulfur-II High-speed Narrowband Filter represents the pinnacle of optical precision and performance. This 50.4mm round, unmounted filter is meticulously engineered for use with ultra-fast optical systems, including the renowned Celestron Rowe-Ackermann Schmidt Astrograph (RASA) and Starizona Hyperstar setups.Crafted by Baader Planetarium, a brand synonymous with excellence in the realm of high-quality optical products, this filter is designed to overcome the challenges posed by conventional narrowband filters. Traditional filters often suffer from a significant loss in transmission due to the pronounced center wavelength (CWL) shift when used with fast optics. This can result in the CWL shifting completely out of the filter's full width at half maximum (FWHM) transmission range, thereby diminishing the quality of the captured image.However, the F/2 Sulfur-II High-speed Narrowband Filter is innovatively pre-shifted to match f/2 to f/3 optics flawlessly, ensuring that even with the typical line broadening encountered in such rapid optical trains, the filter maintains maximum contrast. This feature is particularly effective for high-contrast emission nebulae imaging, where capturing the intricate details and vibrant colors of celestial phenomena is paramount.Astrophotographers will find that using this filter within the f/1.8 to f/3.5 range yields a dramatic improvement in image quality compared to regular sets of narrowband filters. The narrowband design enhances contrast and color saturation, allowing for the capture of astrophotography images with unparalleled clarity and detail.The Baader F/2 Sulfur-II High-speed Narrowband Filter is not only effective but also durable, ensuring that it can withstand the rigors of night sky photography. Its high-speed capabilities make it an indispensable tool for those looking to push the boundaries of their astrophotography work.In summary, the Baader F/2 Sulfur-II High-speed Narrowband Filter is a colorful, high-speed, narrowband, effective, and durable choice for astrophotographers who demand the best from their equipment. Its specialized design for fast optical systems makes it a standout selection for capturing the awe-inspiring beauty of the cosmos with exceptional detail and vibrancy.

Enhance your astrophotography experience with the Baader Planetarium 2" Round H-alpha Enforced-Narrowband 3.5nm Filter, meticulously engineered for f/10 to f/3.5 optical systems. This high-quality, durable filter is your gateway to the incredibly narrow 3.5nm H-alpha world, allowing you to delve into the cosmos with unprecedented clarity.Crafted with innovative technology, this filter dramatically boosts contrast, enabling the capture of even the faintest stars and revealing more intricate details of the most elusive nebulae. Its effectiveness is rooted in the stringent manufacturing process that demands extreme coating homogeneity and exceptional central wavelength (CWL) precision, ensuring that only the H-alpha wavelength is transmitted, while all other wavelengths are blocked.The enforced contrast achieved through this filter's design results in astrophotography images that are not only more detailed but also more reliable, as it significantly reduces the impact of light pollution. This makes it an indispensable tool for astrophotographers seeking to document the beauty of the night sky in its purest form.The initial production of these innovative filters has focused on the most essential sizes, including the 2" / 50.4 mm round and 50x50 mm square formats, with additional sizes anticipated to meet the needs of various optical systems. With a full width at half maximum (FWHM) that defines the precision of this filter, astrophotographers can trust in the consistent performance and quality that Baader Planetarium is renowned for.Choose the Baader Planetarium 2" Round H-alpha Enforced-Narrowband 3.5nm Filter for a transformative astrophotography experience, capturing celestial wonders with unparalleled detail and clarity.

Enhance your astrophotography experience with the high-quality 4.5nm Sulfur-II Ultra-Narrowband CCD Filter, meticulously crafted by the renowned Baader Planetarium. This durable and effective 65mm square, unmounted filter is engineered to elevate your deep-sky imaging, capturing the intricate details of celestial wonders.The innovative design of this filter is optimized for fast optical systems with focal ratios ranging from f/3 to f/8, ensuring compatibility with a wide array of telescopes. Its ultra-narrow 4.5nm bandwidth is specifically tailored for S-II (Sulfur-II) line astrophotography, making it a reliable choice for enthusiasts seeking to isolate specific wavelengths and enhance the visibility of nebulae and other astronomical phenomena.Constructed with IR-blocking capabilities, this filter safeguards your images from unwanted infrared interference. The advanced anti-reflection coatings applied to the filter work to eliminate distracting halos and ghosting, providing you with crisp, clear astrophotographs that truly showcase the beauty of the night sky.Furthermore, the filter boasts non-ageing sealed coated edges, a testament to its long-lasting durability. This feature ensures that the filter remains protected against the elements, maintaining its high performance and image quality over time.Choose the Baader 4.5nm Sulfur-II Ultra-Narrowband CCD Filter for its unparalleled precision and the ability to bring out the subtlest details in your astrophotography pursuits. Whether you're capturing the complex structures of a distant nebula or the delicate filaments of a supernova remnant, this filter is the astrophotographer's essential tool for achieving breathtaking results.

Become an astrophotography aficionado with the Baader Planetarium 50.4mm Round H-alpha Enforced-Narrowband 3.5nm Filter, meticulously engineered for f/10 to f/3.5 optical systems. This high-quality, durable filter is your gateway to the exceptionally narrow 3.5nm H-alpha wavelength, allowing you to delve into the depths of the cosmos with unparalleled clarity.Crafted with precision, this filter enhances contrast dramatically, making even the faintest stars stand out against the darkness of space. It provides an increased signal of the most subtle nebulae details, ensuring that your celestial observations and photographs capture the awe-inspiring beauty of the night sky.The production of such an ultra-narrow filter demands extreme coating homogeneity and exacting center-wavelength (CWL) precision. Baader Planetarium's innovative technology meets these stringent requirements, ensuring that each filter delivers reliable and effective performance. Initially available in the most sought-after sizes, including the 50.4mm round and 50x50mm square formats, this filter is a testament to the brand's commitment to serving the needs of astronomy enthusiasts and professionals alike.With the Baader Planetarium 50.4mm Round H-alpha Enforced-Narrowband 3.5nm Filter, you're not just observing the night sky; you're immersing yourself in the intricate details of the universe. Whether you're capturing the delicate wisps of a distant nebula or the fiery glow of a star in formation, this filter is an essential tool for anyone serious about astrophotography and sky observation.

Take your astrophotography to the next level with the 36mm Round 3.5nm Ultra-Narrowband H-alpha CCD Imaging Filter, unmounted. This high-quality, durable filter from the reputable brand, Baader Planetarium, is specifically engineered for f/10 to f/3.5 optical systems, making it an essential tool for capturing the breathtaking beauty of the night sky. Designed to open up the extremely narrow 3.5nm H-alpha world, this innovative filter enhances contrast, enabling even the faintest stars to shine brighter and providing more signal of the faintest nebulae detail. This level of precision is crucial for astrophotographers who aim to capture the intricate details of celestial objects. The manufacturing of such an ultra-narrow filter requires extreme coating homogeneity and very high CWL precision. This filter is designed to meet these exacting standards, ensuring reliable performance and consistent results. CWL refers to the Center-wavelength, and FWHM denotes the full width half maximum, both critical parameters in astrophotography. Whether you're a seasoned astrophotographer or a beginner looking to enhance your night sky imaging, this 36mm Round 3.5nm Ultra-Narrowband H-alpha CCD Imaging Filter is a reliable and effective choice.

Take your astrophotography to new heights with the 2" Round 4.5nm Ultra-Narrowband Oxygen-III CCD Imaging Filter with LPFC Mount. Crafted by the renowned Baader Planetarium, this high-quality and durable filter is designed to enhance your celestial photography experience. This advanced filter is specifically engineered for fast optical systems ranging from f/8 to f/3. It features an innovative Oxygen-III (O-III) design, which is known for its effectiveness in increasing contrast and color fidelity in astrophotography. This allows you to capture detailed and vibrant images of the night sky like never before. The filter is IR-blocked, ensuring that infrared light does not interfere with your imaging, resulting in clearer and sharper pictures. It also boasts a non-ageing sealed coating on the edges, promising longevity and consistent performance over time. One of the standout features of this filter is its ultra-narrow 4.5nm bandpass. This narrow bandpass allows for the isolation of specific wavelengths of light, making it ideal for capturing detailed images of nebulae and other celestial objects. Moreover, this filter is designed to eliminate common optical issues such as halos, reflections, and ghosting. This means you can expect clean, crisp images without any unwanted distortions. The filter comes with an LPFC mount, making it easy to attach to your CCD camera. Whether you're a professional astrophotographer or an enthusiastic amateur, the 2" Round 4.5nm Ultra-Narrowband Oxygen-III CCD Imaging Filter with LPFC Mount is a valuable addition to your photography equipment.

It is designed for the discerning astrophotographer seeking to elevate their imaging capabilities, this high-quality 4.5nm Baader Sulfur-II (S-II) Ultra-Narrowband CCD Filter is an essential tool for capturing the intricate details of the cosmos. Engineered to work seamlessly with fast optical systems boasting focal ratios from f/3 to f/8, this advanced filter is meticulously crafted to ensure the highest level of light transmission at the S-II line at 672nm.The durable construction of the filter incorporates IR blocking to prevent infrared light from blurring your images, while the innovative anti-reflection coatings are applied to minimize unwanted halos and ghosting effects. This results in astrophotography images that are crisp, clear, and rich in contrast.With its effective narrowband s-ii designation, this filter is particularly adept at isolating the light emitted by ionized sulfur in nebulae or other astronomical phenomena, allowing for precise control over the light spectrum. This specificity makes it a powerful accessory for capturing detailed and accurate images that would otherwise be obscured by broader spectrum filters.The filter also boasts non-ageing sealed coated edges, a testament to its durable and long-lasting design. These edges ensure that the filter remains protected from the elements, maintaining its performance and optical quality over time.Whether you're a professional astronomer or an amateur enthusiast, the Baader Sulfur-II Ultra-Narrowband CCD Filter is an innovative and effective choice for enhancing your astrophotography experience. Its advanced features and superior construction make it a standout selection for anyone looking to capture the beauty of the night sky with unparalleled clarity and detail.

Become an astrophotography enthusiast with the 4.5nm Sulfur-II Ultra-Narrowband CCD Filter, designed for 2" eyepieces. This premium-grade Baader Sulfur II (S-II) filter is specifically engineered for use with fast optical systems, compatible with focal ratios ranging from f/3 to f/8. The filter's ultra-narrowband 4.5nm design ensures high-precision light transmission, capturing the most intricate details in your celestial photography. It is IR-blocked, effectively reducing infrared interference for clearer, sharper images. Further enhancing your astrophotography experience, the filter boasts anti-reflection coatings. This feature minimizes light scattering, eliminating halos and ghosting from your images for a more accurate representation of the night sky. Designed for longevity, the filter features non-ageing sealed coated edges. This ensures the filter's durability and performance, providing you with high-quality, clear images for years to come. Whether you're a seasoned astrophotographer or just starting out, the 4.5nm Sulfur-II Ultra-Narrowband CCD Filter for 2" eyepieces is a valuable addition to your equipment, enhancing your ability to capture the beauty of the cosmos.

Are you an astrophotography enthusiast looking to elevate your celestial captures? The Baader Planetarium 1.25" Round 4.5nm Ultra-Narrowband Oxygen-III CCD Imaging Filter with LPFC Mount is a high-quality, durable, and effective solution for your imaging needs. This premium-grade O-III CCD filter is specifically engineered for fast optical systems ranging from f/8 to f/3, ensuring compatibility with a wide range of telescopes and cameras.Crafted with precision, this filter boasts an ultra-narrow 4.5nm bandwidth, which is crucial for achieving the most precise and accurate color separation. This innovative feature allows you to capture the intricate details of nebulae and other celestial objects with exceptional clarity, even in areas with significant light pollution. The filter's ability to isolate the Oxygen-III line not only enhances contrast but also brings out the subtle nuances of your astrophotography subjects.Reliability is at the core of this filter's design. It comes with an IR-blocking layer, ensuring that unwanted infrared light does not compromise your images. You can expect clean and clear results without the interference of halos, reflections, or ghosting, thanks to the meticulous manufacturing process that eliminates these common optical issues.Moreover, the Baader Planetarium filter is built to last. The non-ageing sealed coating edges prevent deterioration over time, maintaining the filter's effectiveness and image quality throughout its lifespan. This reliable performance makes it a preferred choice for astrophotographers who demand consistency and longevity from their equipment.In summary, the Baader Planetarium 1.25" Round 4.5nm Ultra-Narrowband Oxygen-III CCD Imaging Filter with LPFC Mount stands out as an innovative and professional-grade accessory for astrophotography. Its narrow bandwidth, effective light pollution control, and durable construction make it an indispensable tool for capturing the awe-inspiring beauty of the night sky.

Why settle for less when you can experience superior astrophotography with the 50.4mm Round 4.5nm Ultra-Narrowband Oxygen-III CCD Imaging Filter, Unmounted? This high-quality, durable filter is brought to you by the reputable Baader Planetarium, a brand synonymous with advanced optical products. Designed specifically for fast optical systems ranging from f/8 to f/3, this innovative filter is IR-blocked to ensure the most effective imaging. With its ultra-narrowband S-II filter, it captures specific wavelengths of light, enhancing the detail and accuracy of your astrophotography and other scientific applications. One of the standout features of this filter is its non-ageing sealed coating edges. This means you won't have to worry about the quality of your filter diminishing over time. Moreover, it guarantees no halos, no reflections, and no ghosting, providing you with clear, unobstructed images every time. In a nutshell, the 50.4mm Round 4.5nm Ultra-Narrowband Oxygen-III CCD Imaging Filter, Unmounted is the perfect tool for those seeking to elevate their astrophotography experience. Its effectiveness, durability, and innovative design make it a must-have for both professionals and enthusiasts alike.

An exceptional tool for astrophotographers, the 50.4mm Round 3.5nm Ultra-Narrowband H-alpha CCD Imaging Filter is meticulously designed for f/10 to f/3.5 optical systems. This precision-grade enforced H-alpha filter unlocks the incredibly detailed world of 3.5nm H-alpha imaging, allowing you to capture even the faintest celestial bodies with enhanced clarity. The filter's unique design significantly boosts contrast, enabling the detection of more signals from the most elusive nebulae details. This heightened sensitivity to faint stars and nebulae details sets this filter apart in the realm of astrophotography equipment. The production of such an ultra-narrow filter demands exceptional coating homogeneity and high precision in the Center-wavelength (CWL). This filter meets these stringent requirements, ensuring optimal performance and consistent results. Furthermore, it maintains a high degree of precision in the Full Width Half Maximum (FWHM), a critical factor in determining the filter's bandwidth. In summary, the 50.4mm Round 3.5nm Ultra-Narrowband H-alpha CCD Imaging Filter, Unmounted, is a superior choice for astrophotographers seeking to elevate their imaging capabilities. Its precision engineering and high-quality construction make it an indispensable tool for capturing the intricate details of the cosmos.

• Precision grade enforced H-alpha filter for f/10 to f/3.5 optical systems• Opens up the extremely narrow 3.5nm H-alpha world• This enforced contrast results in even fainter stars, providing more signal of faintest nebulae detail• Manufacturing such ultra-narrow filter does require extreme coating homogeneity and very high CWL precision, which these filters are designed for. CWL= Center-wavelength / FWHM= full width half maximum

Experience the unparalleled clarity and detail with our 50x50mm Square H-alpha Enforced-Narrowband 3.5nm Filter, specifically designed for f/10 to f/3.5 optical systems. This ultra-narrowband filter is your gateway to the intricate world of H-alpha, O-III, and S-II, allowing you to capture the faintest nebula detail with enhanced contrast. Our filter's design is a testament to precision and quality, boasting superior coating homogeneity and high Center Wavelength Precision. These features ensure the filter's performance is consistently exceptional, providing you with the most accurate and detailed images possible. Whether you're an astrophotographer seeking to capture the ethereal beauty of the cosmos or a professional requiring the utmost in optical precision, the 50x50mm Square H-alpha Enforced-Narrowband 3.5nm Filter is an essential tool for your optical systems. Experience the difference in clarity and detail that this high-quality, precision-engineered filter can make in your imaging.

Enhance your astrophotography experience with the F/2 Sulfur-II High-speed Narrowband Filter, a 31mm round, unmounted filter from Baader Planetarium. Specifically designed for use in fast optical systems such as Celestron's Rowe-Ackermann Schmidt Astrograph (RASA) and Starizona's Hyperstar systems, this high-quality filter is a game-changer in the field of celestial imaging.Traditional narrowband filters often result in significant transmission loss due to the strong center wavelength (CWL) shift. In extremely fast cases, the CWL can even shift out of the filter's full width half maximum (FWHM) transmission. However, this innovative S-II filter has a CWL-preshift that perfectly aligns with f/2 to f/3 optics, effectively eliminating this issue.Despite the typical line broadening associated with fast optical trains, this durable and reliable filter delivers maximum contrast, allowing for more vivid and accurate colors in your images. It's specifically designed to enhance high contrast emission nebulae imaging, making it an essential tool for any serious astrophotographer.Experience a dramatic improvement in your astrophotography when using this filter between f/1.8 and f/3.5, compared to regular sets of narrowband filters. With the F/2 Sulfur-II High-speed Narrowband Filter, you can truly harness the power of fast optics and capture the beauty of the cosmos in stunning detail.

• Precision grade enforced H-alpha filter for f/10 to f/3.5 optical systems• Opens up the extremely narrow 3.5nm H-alpha world• This enforced contrast results in even fainter stars, providing more signal of faintest nebulae detail• Manufacturing such ultra-narrow filter does require extreme coating homogeneity and very high CWL precision, which these filters are designed for. CWL= Center-wavelength / FWHM= full width half maximum

• Premium grade O-III CCD-filter for fast optical systems f/8 to f/3• IR-blocked• No halos, No reflections, No ghosting• Non-ageing sealed coating edges

Discover the transformative power of the Baader S-II High-speed f/2 Narrowband Filter, an innovative solution for astrophotography enthusiasts. This high-quality, unmounted, 50mm square filter is specifically designed for use in fast optical systems, including renowned models like Celestron's Rowe-Ackermann Schmidt Astrograph (RASA) and Starizona's Hyperstar systems. Unlike conventional narrowband filters, which often result in significant transmission loss due to the strong center wavelength (CWL) shift, this Baader S-II filter features a unique CWL-preshift. This innovative design perfectly matches f/2 to f/3 optics, ensuring optimal performance even in very fast optical systems where the CWL may shift out of the filter's full width half maximum (FWHM) transmission. Despite the typical line broadening associated with fast optical trains, this versatile filter delivers maximum contrast, making it an essential tool for high contrast emission nebulae imaging. Experience a dramatic improvement in your astrophotography when using this filter between f/1.8 and f/3.5, compared to regular sets of narrowband filters. Crafted by Baader Planetarium, a brand synonymous with durability and quality, this colorful S-II filter is a game-changer for astrophotography, offering unparalleled flexibility and performance.