Astronomik L-1 UV-IR Cut XT L-Filter - Canon EOS APS-C Clip Filter
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Astronomik offers a range of three different ultraviolet (UV) and infrared (IR) blocking filters for the Luminance channel. These filters are designed to help you tune your setup to produce the sharpest, most contrast-rich images possible. The luminance channel is critical to a great final image because it provides the most signal, which means the filter should have the highest transmission possible with a wide spectral bandpass across the entire visible spectrum. This combination ensures the highest sensitivity and photon counts on your pixels.
However, not all optical instruments or additional optical elements like correctors, field-flatteners, or reducers have a perfect color correction. A Luminance filter with too wide a bandpass can show chromatic aberration of the optical system, resulting in soft or bloated stars and making image processing difficult. To address this, Astronomik offers its line of Luminance filters: the L-1 filter with the widest spectral window, the L-2 filter with a standard spectral window, and the L-3 filter with the narrowest spectral window.
Depending on the color errors of the instruments used, the Astronomik Luminance filter with the widest spectral window should be used.
- L-1 UV-IR Block filter: Ideal for chromatic aberration-free optical systems such as reflector telescopes, where additional lenses are only used to correct image errors, not to change the focal ratio.
- L-2 UV-IR Block filter: Suitable for APO refractors or very good doublets used with their native focal length, reflecting telescopes with focal reducers and RASA telescopes. The transmission is very close to the UV-IR blocking filters used by companies such as Canon and Nikon in their cameras.
- L-3 UV-IR Block filter: Designed for refractors and camera lenses with less-than-perfect color correction to minimize bluish halos around stars.
The transmission characteristics and coatings on the Astronomik Luminance filters are engineered to eliminate halos and reflections. Even with bright stars in the field of view, nebulae and galaxies are imaged with the finest structures and maximum contrast.
Additional note for photographers under light-polluted skies
The Astronomik CLS CCD filter is recommended as a replacement for the Astronomik Luminance filter. The Astronomik CLS CCD filter provides approximately the same amount of light in all three color channels while blocking nearly all unwanted light pollution, resulting in much deeper images with much less background noise from light-polluted observing sites.
Clip-Filter for Canon EOS APS-C DSLR cameras
Since 2007, we offer our extremely popular Astronomik Clip-Filters. The complete range of Astronomik filters is available as Clip-Filters for the Canon EOS DSLR cameras with APS-C sensors.
The Astronomik Clip-Filters offer a number of practical advantages that make them an ideal choice for astrophotographers:
- Installing and removing the Astronomik Clip-Filter is very quick and easy and requires no extra tools or modifications to the camera body. They can be changed at any time, even at night.
- All lens functions, such as focus, aperture, and image stabilization remain fully functional.
- The Astronomik Clip-Filters are held securely in place without stressing the high-quality glass.
- The Astronomik Clip-Filters are designed and optimized for use with both standard camera lenses and telescopes.
Through the Astronomik Clip-Filters, we were able to solve several common issues faced by astrophotographers:
- Large filters for large camera lenses are very expensive.
- Using a filter holder between the camera body and the lens prevents focusing to infinity.
- For very fast telescopes (low f-number) like the Vixen R200SS or the Takahashi "Epsilon" astrograph, a filter drawer or filter wheel cannot be used because the distance to the corrector lenses would be changed.
- Long exposure times lead to dust settling on the camera's sensor chip.
The Astronomik EOS APS-C Clip-Filters are made from black anodized aluminum.
Additionally, all Astronomik EOS APS-C Clip-Filters serve as an excellent dust shield, protecting the sensor during long exposures. If you only need a dust shield without filtering effects, the Astronomik MC-Clear EOS APS-C Clip-Filter is the right choice.
Use Astronomik filters for your Canon EOS APS-C DSLR camera and enjoy marvelous images with an ultra light equipment!
Compatible Canon EOS APS-C DSLR cameras
| Model | Compatibility |
|---|---|
| Canon EOS-1D (all variants) | No |
| Canon EOS 5D (all variants) | No |
| Canon EOS 7D | Yes |
| Canon EOS 7D Mark II | Yes |
| Canon EOS 20D | Yes |
| Canon EOS 20Da | Yes |
| Canon EOS 30D | Yes |
| Canon EOS 40D | Yes |
| Canon EOS 50D | Yes |
| Canon EOS 60D | Yes |
| Canon EOS 60Da | Yes |
| Canon EOS 70D | Yes |
| Canon EOS 77D | Yes |
| Canon EOS 80D | Yes |
| Canon EOS 90D | Yes |
| Canon EOS 100D / Rebel SL1 / Kiss X7 | Yes |
| Canon EOS 200D / Rebel SL2 / Kiss X9 | Yes |
| Canon EOS 250D / Rebel SL3 / Kiss X10 | Yes |
| Canon EOS 300D / Digital Rebel / Kiss Digital | Yes |
| Canon EOS 350D / Digital Rebel XT / Kiss Digital N | Yes |
| Canon EOS 400D / Digital Rebel XTi / Kiss Digital X | Yes |
| Canon EOS 450D / Digital Rebel XSi / Kiss X2 | Yes |
| Canon EOS 500D / Digital Rebel T1i / Kiss X3 | Yes |
| Canon EOS 550D / Digital Rebel T2i / Kiss X4 | Yes |
| Canon EOS 600D / Digital Rebel T3i / Kiss X5 | Yes |
| Canon EOS 650D / Digital Rebel T4i / Kiss X6i | Yes |
| Canon EOS 700D / Digital Rebel T5i / Kiss X7i | Yes |
| Canon EOS 750D / Rebel T6i / Kiss X8i | Yes |
| Canon EOS 760D / Rebel T6s / 8000D | Yes |
| Canon EOS 800D / Rebel T7i / Kiss X9i | Yes |
| Canon EOS 850D / Rebel T8i / Kiss X10i | Yes |
| Canon EOS 1000D / Digital Rebel XS / Kiss F | Yes |
| Canon EOS 1100D / Rebel T3 / Kiss X50 | Yes |
| Canon EOS 1200D / Rebel T5 / Kiss X70 | Yes |
| Canon EOS 1300D / Rebel T6 / Kiss X80 | Yes |
| Canon EOS 1500D / 2000D / Rebel T7 / Kiss X90 | Yes |
| Canon EOS 4000D / Rebel T100 / 3000D | Yes |
| Canon cameras offered before 2003 | No |
The Astronomik EOS APS-C Clip-Filters fit into the original Canon EF to EF-M bayonet adapter and can be used with all variants of the Canon EOS M camera.
Compatible lenses and adapters
| Model | Compatibility |
|---|---|
| Original Canon EF-S series lenses | No |
| Lenses from third party manufacturers | Yes |
| M42 lens adapters | Yes |
| T2 lens adapters | Yes |
Astronomik XT-Filters
The new Astronomik XT-Filters are specifically designed for astrophotography with wide-angle lenses, delivering sharp and crisp star images all the way to the edges of the image.
Since many years, Astronomik Clip-Filters are a popular and well known tool among astrophotographers worldwide. However, when using very short focal length lenses to take widefield images, standard Clip-Filters could introduce aberrations, stretching stars in the outermost corners of the image. To solve this issue, the new Astronomik XT-Filters are coated on an extremely thin substrate of only 0.3mm or 0,5mm thickness, significantly reducing these aberrations.
Despite the reduced thickness, the Astronomik XT-Filters maintain the highest optical quality: they are finely polished, free of any striae, residual stresses, and bubbles, and are suitable for the most advanced imaging applications.
The Astronomik XT-Filters are manufactured using the same durable coating technology as all Astronomik filters. They are extremely scratch-resistant, unaffected by high humidity, and do not degrade over time. This ensures they retain their performance for years. As with all our filters, we underline this promise with a 10-year warranty.
Please note that not all Astronomik filters are available as XT-versions due to the complexity of manufacturing these ultra-thin filters. Currently, filters are produced that are predestined for photography with wide-angle lenses.
Technical data
- Glass thickness: 1mm (except Astronomik OWB Type 3 and XT filters)
- Finely polished optical glass, free of any striae, residual stresses, and bubbles
- Extremely scratch-resistant and durable coating
- Completely resistant against high humidity and aging effects
- Astronomik MFR coating (Astronomik Deep-Sky RGB, UV-IR Block L-1, L-2, L-3, and Narrowband-Emissionline filters)
- Parfocal with other Astronomik filters
- Diffraction-limited
- Optimized spectral windows
- Delivered in a high-quality, long-lasting filter box
Due to the high-precision machining of the carrier substrate, all Astronomik filters are parfocal with wedge errors far below all common tolerances. Astronomik filters are diffraction-limited, ensuring that the optical performance (resolution and and contrast) of your telescope is not compromised. Issues concerning focal distances and the exact alignment of images from each color channel are therefore effectively eliminated.
All Astronomik filters are ideal for modern cameras, including both CMOS- and CCD-based models, ensuring you capture the best possible images with your equipment. Sharpness, contrast, and the absence of any reflections and halos are guaranteed. Even with bright stars in the field of view, nebulae and galaxies will be captured with the finest structures. The Astronomik MFR coating is designed for optimal performance across a wide range of focal ratios of the optics used.
Every Astronomik filter undergoes a rigorous quality control process before delivery.
Other Information
- Country of Manufacture: Germany
Astronomik offers a range of three different ultraviolet (UV) and infrared (IR) blocking filters for the Luminance channel. These filters are designed to help you tune your setup to produce the sharpest, most contrast-rich images possible. The luminance channel is critical to a great final image because it provides the most signal, which means the filter should have the highest transmission possible with a wide spectral bandpass across the entire visible spectrum. This combination ensures the highest sensitivity and photon counts on your pixels.
However, not all optical instruments or additional optical elements like correctors, field-flatteners, or reducers have a perfect color correction. A Luminance filter with too wide a bandpass can show chromatic aberration of the optical system, resulting in soft or bloated stars and making image processing difficult. To address this, Astronomik offers its line of Luminance filters: the L-1 filter with the widest spectral window, the L-2 filter with a standard spectral window, and the L-3 filter with the narrowest spectral window.
Depending on the color errors of the instruments used, the Astronomik Luminance filter with the widest spectral window should be used.
- L-1 UV-IR Block filter: Ideal for chromatic aberration-free optical systems such as reflector telescopes, where additional lenses are only used to correct image errors, not to change the focal ratio.
- L-2 UV-IR Block filter: Suitable for APO refractors or very good doublets used with their native focal length, reflecting telescopes with focal reducers and RASA telescopes. The transmission is very close to the UV-IR blocking filters used by companies such as Canon and Nikon in their cameras.
- L-3 UV-IR Block filter: Designed for refractors and camera lenses with less-than-perfect color correction to minimize bluish halos around stars.
The transmission characteristics and coatings on the Astronomik Luminance filters are engineered to eliminate halos and reflections. Even with bright stars in the field of view, nebulae and galaxies are imaged with the finest structures and maximum contrast.
Additional note for photographers under light-polluted skies
The Astronomik CLS CCD filter is recommended as a replacement for the Astronomik Luminance filter. The Astronomik CLS CCD filter provides approximately the same amount of light in all three color channels while blocking nearly all unwanted light pollution, resulting in much deeper images with much less background noise from light-polluted observing sites.
Clip-Filter for Canon EOS APS-C DSLR cameras
Since 2007, we offer our extremely popular Astronomik Clip-Filters. The complete range of Astronomik filters is available as Clip-Filters for the Canon EOS DSLR cameras with APS-C sensors.
The Astronomik Clip-Filters offer a number of practical advantages that make them an ideal choice for astrophotographers:
- Installing and removing the Astronomik Clip-Filter is very quick and easy and requires no extra tools or modifications to the camera body. They can be changed at any time, even at night.
- All lens functions, such as focus, aperture, and image stabilization remain fully functional.
- The Astronomik Clip-Filters are held securely in place without stressing the high-quality glass.
- The Astronomik Clip-Filters are designed and optimized for use with both standard camera lenses and telescopes.
Through the Astronomik Clip-Filters, we were able to solve several common issues faced by astrophotographers:
- Large filters for large camera lenses are very expensive.
- Using a filter holder between the camera body and the lens prevents focusing to infinity.
- For very fast telescopes (low f-number) like the Vixen R200SS or the Takahashi "Epsilon" astrograph, a filter drawer or filter wheel cannot be used because the distance to the corrector lenses would be changed.
- Long exposure times lead to dust settling on the camera's sensor chip.
The Astronomik EOS APS-C Clip-Filters are made from black anodized aluminum.
Additionally, all Astronomik EOS APS-C Clip-Filters serve as an excellent dust shield, protecting the sensor during long exposures. If you only need a dust shield without filtering effects, the Astronomik MC-Clear EOS APS-C Clip-Filter is the right choice.
Use Astronomik filters for your Canon EOS APS-C DSLR camera and enjoy marvelous images with an ultra light equipment!
Compatible Canon EOS APS-C DSLR cameras
| Model | Compatibility |
|---|---|
| Canon EOS-1D (all variants) | No |
| Canon EOS 5D (all variants) | No |
| Canon EOS 7D | Yes |
| Canon EOS 7D Mark II | Yes |
| Canon EOS 20D | Yes |
| Canon EOS 20Da | Yes |
| Canon EOS 30D | Yes |
| Canon EOS 40D | Yes |
| Canon EOS 50D | Yes |
| Canon EOS 60D | Yes |
| Canon EOS 60Da | Yes |
| Canon EOS 70D | Yes |
| Canon EOS 77D | Yes |
| Canon EOS 80D | Yes |
| Canon EOS 90D | Yes |
| Canon EOS 100D / Rebel SL1 / Kiss X7 | Yes |
| Canon EOS 200D / Rebel SL2 / Kiss X9 | Yes |
| Canon EOS 250D / Rebel SL3 / Kiss X10 | Yes |
| Canon EOS 300D / Digital Rebel / Kiss Digital | Yes |
| Canon EOS 350D / Digital Rebel XT / Kiss Digital N | Yes |
| Canon EOS 400D / Digital Rebel XTi / Kiss Digital X | Yes |
| Canon EOS 450D / Digital Rebel XSi / Kiss X2 | Yes |
| Canon EOS 500D / Digital Rebel T1i / Kiss X3 | Yes |
| Canon EOS 550D / Digital Rebel T2i / Kiss X4 | Yes |
| Canon EOS 600D / Digital Rebel T3i / Kiss X5 | Yes |
| Canon EOS 650D / Digital Rebel T4i / Kiss X6i | Yes |
| Canon EOS 700D / Digital Rebel T5i / Kiss X7i | Yes |
| Canon EOS 750D / Rebel T6i / Kiss X8i | Yes |
| Canon EOS 760D / Rebel T6s / 8000D | Yes |
| Canon EOS 800D / Rebel T7i / Kiss X9i | Yes |
| Canon EOS 850D / Rebel T8i / Kiss X10i | Yes |
| Canon EOS 1000D / Digital Rebel XS / Kiss F | Yes |
| Canon EOS 1100D / Rebel T3 / Kiss X50 | Yes |
| Canon EOS 1200D / Rebel T5 / Kiss X70 | Yes |
| Canon EOS 1300D / Rebel T6 / Kiss X80 | Yes |
| Canon EOS 1500D / 2000D / Rebel T7 / Kiss X90 | Yes |
| Canon EOS 4000D / Rebel T100 / 3000D | Yes |
| Canon cameras offered before 2003 | No |
The Astronomik EOS APS-C Clip-Filters fit into the original Canon EF to EF-M bayonet adapter and can be used with all variants of the Canon EOS M camera.
Compatible lenses and adapters
| Model | Compatibility |
|---|---|
| Original Canon EF-S series lenses | No |
| Lenses from third party manufacturers | Yes |
| M42 lens adapters | Yes |
| T2 lens adapters | Yes |
Astronomik XT-Filters
The new Astronomik XT-Filters are specifically designed for astrophotography with wide-angle lenses, delivering sharp and crisp star images all the way to the edges of the image.
Since many years, Astronomik Clip-Filters are a popular and well known tool among astrophotographers worldwide. However, when using very short focal length lenses to take widefield images, standard Clip-Filters could introduce aberrations, stretching stars in the outermost corners of the image. To solve this issue, the new Astronomik XT-Filters are coated on an extremely thin substrate of only 0.3mm or 0,5mm thickness, significantly reducing these aberrations.
Despite the reduced thickness, the Astronomik XT-Filters maintain the highest optical quality: they are finely polished, free of any striae, residual stresses, and bubbles, and are suitable for the most advanced imaging applications.
The Astronomik XT-Filters are manufactured using the same durable coating technology as all Astronomik filters. They are extremely scratch-resistant, unaffected by high humidity, and do not degrade over time. This ensures they retain their performance for years. As with all our filters, we underline this promise with a 10-year warranty.
Please note that not all Astronomik filters are available as XT-versions due to the complexity of manufacturing these ultra-thin filters. Currently, filters are produced that are predestined for photography with wide-angle lenses.
Technical data
- Glass thickness: 1mm (except Astronomik OWB Type 3 and XT filters)
- Finely polished optical glass, free of any striae, residual stresses, and bubbles
- Extremely scratch-resistant and durable coating
- Completely resistant against high humidity and aging effects
- Astronomik MFR coating (Astronomik Deep-Sky RGB, UV-IR Block L-1, L-2, L-3, and Narrowband-Emissionline filters)
- Parfocal with other Astronomik filters
- Diffraction-limited
- Optimized spectral windows
- Delivered in a high-quality, long-lasting filter box
Due to the high-precision machining of the carrier substrate, all Astronomik filters are parfocal with wedge errors far below all common tolerances. Astronomik filters are diffraction-limited, ensuring that the optical performance (resolution and and contrast) of your telescope is not compromised. Issues concerning focal distances and the exact alignment of images from each color channel are therefore effectively eliminated.
All Astronomik filters are ideal for modern cameras, including both CMOS- and CCD-based models, ensuring you capture the best possible images with your equipment. Sharpness, contrast, and the absence of any reflections and halos are guaranteed. Even with bright stars in the field of view, nebulae and galaxies will be captured with the finest structures. The Astronomik MFR coating is designed for optimal performance across a wide range of focal ratios of the optics used.
Every Astronomik filter undergoes a rigorous quality control process before delivery.
Astronomik offers a range of three different ultraviolet (UV) and infrared (IR) blocking filters for the Luminance channel. These filters are designed to help you tune your setup to produce the sharpest, most contrast-rich images possible. The luminance channel is critical to a great final image because it provides the most signal, which means the filter should have the highest transmission possible with a wide spectral bandpass across the entire visible spectrum. This combination ensures the highest sensitivity and photon counts on your pixels.
However, not all optical instruments or additional optical elements like correctors, field-flatteners, or reducers have a perfect color correction. A Luminance filter with too wide a bandpass can show chromatic aberration of the optical system, resulting in soft or bloated stars and making image processing difficult. To address this, Astronomik offers its line of Luminance filters: the L-1 filter with the widest spectral window, the L-2 filter with a standard spectral window, and the L-3 filter with the narrowest spectral window.
Depending on the color errors of the instruments used, the Astronomik Luminance filter with the widest spectral window should be used.
- L-1 UV-IR Block filter: Ideal for chromatic aberration-free optical systems such as reflector telescopes, where additional lenses are only used to correct image errors, not to change the focal ratio.
- L-2 UV-IR Block filter: Suitable for APO refractors or very good doublets used with their native focal length, reflecting telescopes with focal reducers and RASA telescopes. The transmission is very close to the UV-IR blocking filters used by companies such as Canon and Nikon in their cameras.
- L-3 UV-IR Block filter: Designed for refractors and camera lenses with less-than-perfect color correction to minimize bluish halos around stars.
The transmission characteristics and coatings on the Astronomik Luminance filters are engineered to eliminate halos and reflections. Even with bright stars in the field of view, nebulae and galaxies are imaged with the finest structures and maximum contrast.
Additional note for photographers under light-polluted skies
The Astronomik CLS CCD filter is recommended as a replacement for the Astronomik Luminance filter. The Astronomik CLS CCD filter provides approximately the same amount of light in all three color channels while blocking nearly all unwanted light pollution, resulting in much deeper images with much less background noise from light-polluted observing sites.
Clip-Filter for Canon EOS APS-C DSLR cameras
Since 2007, we offer our extremely popular Astronomik Clip-Filters. The complete range of Astronomik filters is available as Clip-Filters for the Canon EOS DSLR cameras with APS-C sensors.
The Astronomik Clip-Filters offer a number of practical advantages that make them an ideal choice for astrophotographers:
- Installing and removing the Astronomik Clip-Filter is very quick and easy and requires no extra tools or modifications to the camera body. They can be changed at any time, even at night.
- All lens functions, such as focus, aperture, and image stabilization remain fully functional.
- The Astronomik Clip-Filters are held securely in place without stressing the high-quality glass.
- The Astronomik Clip-Filters are designed and optimized for use with both standard camera lenses and telescopes.
Through the Astronomik Clip-Filters, we were able to solve several common issues faced by astrophotographers:
- Large filters for large camera lenses are very expensive.
- Using a filter holder between the camera body and the lens prevents focusing to infinity.
- For very fast telescopes (low f-number) like the Vixen R200SS or the Takahashi "Epsilon" astrograph, a filter drawer or filter wheel cannot be used because the distance to the corrector lenses would be changed.
- Long exposure times lead to dust settling on the camera's sensor chip.
The Astronomik EOS APS-C Clip-Filters are made from black anodized aluminum.
Additionally, all Astronomik EOS APS-C Clip-Filters serve as an excellent dust shield, protecting the sensor during long exposures. If you only need a dust shield without filtering effects, the Astronomik MC-Clear EOS APS-C Clip-Filter is the right choice.
Use Astronomik filters for your Canon EOS APS-C DSLR camera and enjoy marvelous images with an ultra light equipment!
Compatible Canon EOS APS-C DSLR cameras
| Model | Compatibility |
|---|---|
| Canon EOS-1D (all variants) | No |
| Canon EOS 5D (all variants) | No |
| Canon EOS 7D | Yes |
| Canon EOS 7D Mark II | Yes |
| Canon EOS 20D | Yes |
| Canon EOS 20Da | Yes |
| Canon EOS 30D | Yes |
| Canon EOS 40D | Yes |
| Canon EOS 50D | Yes |
| Canon EOS 60D | Yes |
| Canon EOS 60Da | Yes |
| Canon EOS 70D | Yes |
| Canon EOS 77D | Yes |
| Canon EOS 80D | Yes |
| Canon EOS 90D | Yes |
| Canon EOS 100D / Rebel SL1 / Kiss X7 | Yes |
| Canon EOS 200D / Rebel SL2 / Kiss X9 | Yes |
| Canon EOS 250D / Rebel SL3 / Kiss X10 | Yes |
| Canon EOS 300D / Digital Rebel / Kiss Digital | Yes |
| Canon EOS 350D / Digital Rebel XT / Kiss Digital N | Yes |
| Canon EOS 400D / Digital Rebel XTi / Kiss Digital X | Yes |
| Canon EOS 450D / Digital Rebel XSi / Kiss X2 | Yes |
| Canon EOS 500D / Digital Rebel T1i / Kiss X3 | Yes |
| Canon EOS 550D / Digital Rebel T2i / Kiss X4 | Yes |
| Canon EOS 600D / Digital Rebel T3i / Kiss X5 | Yes |
| Canon EOS 650D / Digital Rebel T4i / Kiss X6i | Yes |
| Canon EOS 700D / Digital Rebel T5i / Kiss X7i | Yes |
| Canon EOS 750D / Rebel T6i / Kiss X8i | Yes |
| Canon EOS 760D / Rebel T6s / 8000D | Yes |
| Canon EOS 800D / Rebel T7i / Kiss X9i | Yes |
| Canon EOS 850D / Rebel T8i / Kiss X10i | Yes |
| Canon EOS 1000D / Digital Rebel XS / Kiss F | Yes |
| Canon EOS 1100D / Rebel T3 / Kiss X50 | Yes |
| Canon EOS 1200D / Rebel T5 / Kiss X70 | Yes |
| Canon EOS 1300D / Rebel T6 / Kiss X80 | Yes |
| Canon EOS 1500D / 2000D / Rebel T7 / Kiss X90 | Yes |
| Canon EOS 4000D / Rebel T100 / 3000D | Yes |
| Canon cameras offered before 2003 | No |
The Astronomik EOS APS-C Clip-Filters fit into the original Canon EF to EF-M bayonet adapter and can be used with all variants of the Canon EOS M camera.
Compatible lenses and adapters
| Model | Compatibility |
|---|---|
| Original Canon EF-S series lenses | No |
| Lenses from third party manufacturers | Yes |
| M42 lens adapters | Yes |
| T2 lens adapters | Yes |
Astronomik XT-Filters
The new Astronomik XT-Filters are specifically designed for astrophotography with wide-angle lenses, delivering sharp and crisp star images all the way to the edges of the image.
Since many years, Astronomik Clip-Filters are a popular and well known tool among astrophotographers worldwide. However, when using very short focal length lenses to take widefield images, standard Clip-Filters could introduce aberrations, stretching stars in the outermost corners of the image. To solve this issue, the new Astronomik XT-Filters are coated on an extremely thin substrate of only 0.3mm or 0,5mm thickness, significantly reducing these aberrations.
Despite the reduced thickness, the Astronomik XT-Filters maintain the highest optical quality: they are finely polished, free of any striae, residual stresses, and bubbles, and are suitable for the most advanced imaging applications.
The Astronomik XT-Filters are manufactured using the same durable coating technology as all Astronomik filters. They are extremely scratch-resistant, unaffected by high humidity, and do not degrade over time. This ensures they retain their performance for years. As with all our filters, we underline this promise with a 10-year warranty.
Please note that not all Astronomik filters are available as XT-versions due to the complexity of manufacturing these ultra-thin filters. Currently, filters are produced that are predestined for photography with wide-angle lenses.
Technical data
- Glass thickness: 1mm (except Astronomik OWB Type 3 and XT filters)
- Finely polished optical glass, free of any striae, residual stresses, and bubbles
- Extremely scratch-resistant and durable coating
- Completely resistant against high humidity and aging effects
- Astronomik MFR coating (Astronomik Deep-Sky RGB, UV-IR Block L-1, L-2, L-3, and Narrowband-Emissionline filters)
- Parfocal with other Astronomik filters
- Diffraction-limited
- Optimized spectral windows
- Delivered in a high-quality, long-lasting filter box
Due to the high-precision machining of the carrier substrate, all Astronomik filters are parfocal with wedge errors far below all common tolerances. Astronomik filters are diffraction-limited, ensuring that the optical performance (resolution and and contrast) of your telescope is not compromised. Issues concerning focal distances and the exact alignment of images from each color channel are therefore effectively eliminated.
All Astronomik filters are ideal for modern cameras, including both CMOS- and CCD-based models, ensuring you capture the best possible images with your equipment. Sharpness, contrast, and the absence of any reflections and halos are guaranteed. Even with bright stars in the field of view, nebulae and galaxies will be captured with the finest structures. The Astronomik MFR coating is designed for optimal performance across a wide range of focal ratios of the optics used.
Every Astronomik filter undergoes a rigorous quality control process before delivery.
Other Information
- Country of Manufacture: Germany
Astronomik L-1 UV-IR Cut XT L-Filter - Canon EOS APS-C Clip Filter