Astronomik UHC-E Filter The Astronomik UHC-E filter was developed for astrophotography of emission nebulae and comets under light-polluted skies. The Astronomik UHC-E filter enhances the contrast between these celestial objects and the sky background by blocking the typical emissions from street lights, as well as all lines of natural airglow. With a Full-Width-Half Maximum (FWHM) of 45nm, the Astronomik UHC-E filter ensures a significant contrast boost while allowing more starlight to pass through compared to the Astronomik UHC filter. In addition, the transmission range of the Astronomik UHC-E filter includes the typical emission bands of comets, making them much easier to photograph. Other uses The 1.25" and 2" socket models can be used for observations from light-polluted areas. Alternatives The Astronomik UHC filter is better suited for photographing gas nebulae in areas with strong light pollution. Its narrower FWHM suppresses the sky background even more effectively. We recommend the Astronomik CLS and CLS CCD filters for photographing galaxies and star clusters in areas with moderate light pollution. Suitability of the Astronomik UHC-E filters CMOS and CCD photography: Good, requires an additional Astronomik IR-Block filter DSLR photography (original): Good, color balance is shifted, but contrast is enhanced DSLR photography (astro-modified): Very good, color balance is also good DSLR photography (MC-modified): Very good, requires an additional Astronomik IR-Block filter Clip-Filters for mirrorless Canon EOS R APS-C cameras Canon EOS R APS-C series cameras are an excellent choice for astrophotography. With Astronomik Clip-Filters, you can use our full range of filters with your camera to capture stunning images. Whether paired with a camera lens or a telescope, our clip filters ensure maximum image quality and performance from your setup. 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 can not 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. Additionally, all Astronomik EOS R 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 R APS-C Clip-Filter is the right choice. Use Astronomik filters for your Canon EOS R APS-C camera and enjoy marvelous images with an ultra-light equipment! NOTE: Please store the Clip-Filter in the supplied storage box and do not leave it in the camera permanently. Astronomik filters are diffraction-limited, ensuring that the optical performance (resolution and contrast) of your telescope is not compromised. Thanks to the high-precision machining of the glas substrate, all Astronomik filters are parfocal. The wedge errors are far below all common tolerances. Therefore, all issues concerning focal distances and the exact alignment of images from each color channel are 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 and MaxFR coatings are 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. Compatible Canon EOS R APS-C cameras Model Compatibility Canon EOS R7 Canon EOS R10 Canon EOS R50 Canon EOS R50 V Canon EOS R100 Non-compatible Canon lenses Model Compatibility Canon RF 14mm f/1.4 L VCM Canon RF 28mm F2.8 STM Canon RF 35mm F1.8 IS Macro STM Canon RF 85mm F1.2L USM Canon Extender RF 2x Canon Extender RF 1.4x Technical Specifications Typical transmission of 94% at 486nm (H-beta) Typical transmission of 95% at 496nm (OIII) Typical transmission of 95% at 501nm (OIII) Typical transmission of 94% at 656nm (H-alpha) Transmission range: 465nm to 530nm and above 645nm Full-Width-Half Maximum (FWHM): 45nm 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 Parfocal with other Astronomik filters Diffraction-limited Optimized spectral windows Delivered in a high-quality, long-lasting filter box Made in Germany In the Box Selected frame size Astronomik UHC-E Filter Plastic Storage Case Manual & Warranty Astronomik 10 year warranty
