Dramatically Reduces Light Pollution Impact. Rejects Mercury and Sodium Light While Increasing Contract. Excellent for Reflection Nebulae and Galaxies. Use with Monochrome or One-Shot Color Cameras.

Excellent Light Pollution Suppression. Image in Urban Areas and Under Moonlight. Take One-Shot Color Images with Superior Color Fidelity. Narrowband Filtering Passes Hydrogen-Alpha, Hydrogen-Beta and Oxygen-III. Can be Used with Filter Wheel, Filter Drawer or Camera Nose Piece.

Excellent Light Pollution Suppression. Image in Urban Areas and Under Moonlight. Take One-Shot Color Images with Superior Color Fidelity. Narrowband Filtering Passes Hydrogen-Alpha, Hydrogen-Beta and Oxygen-III. Can be Used with Filter Wheel, Filter Drawer or Camera Nose Piece.

Excellent Light Pollution and Moonlight Suppression. Image in Urban Areas and Under Moonlight. Take One-Shot Color Images with Superior Color Fidelity. Narrowband Filtering Passes Hydrogen-Alpha, Hydrogen-Beta and Oxygen-III. Supported Models Please see the product images for a table of supported cameras. NOTE EF-S lenses extend too far into the camera body and will not work with these clip filters.

Dramatically Reduces Light Pollution Impact. Rejects Mercury and Sodium Light While Increasing Contract. Excellent for Reflection Nebulae and Galaxies. Use with Monochrome or One-Shot Color Cameras.

Dual H-AlphaO-III 7nm narrowband filter. Allows for imaging in bright man-made light pollution and moonlit conditions. Most useful for One-Shot Color cameras. Take color images without needing to combine images with multiple filters. Use for taking images of emission nebulae.

Dramatically Reduces Light Pollution Impact. Rejects Mercury and Sodium Light While Increasing Contract. Excellent for Reflection Nebulae and Galaxies. Use with Monochrome or One-Shot Color Cameras.

Difference It is different from the series of dual-narrowband -eNhance and L-eXtreme in that L-Ultimate is a dual-3nm bandwidth filter that only passes through Ha and Olll emission lines. You will get a darker I sky background, more contrast of the image and the suppression on stars. L-Ultimate has also been optimized in terms of halo performance, so that there is no obvious halo when shooting on a bright star object.. Advantage 1.The advantage of L-Ultimate is that it only passes through the emission lines OllI 500.7nm and Ha656.3nm, in which case all other light pollution emission lines are eliminated so that only the emission and reflection signals of the nebula are captured during imaging. Therefore, the sky background of the image is darker, and the contrast between the nebulae and the signal-to-noise ratio are improved to the greatest extent. In heavy light pollution areas, the product can also selectively filter light pollution and clutter signals through the emission lines of nebulae, and finally avoid the impact of light pollution on astrophotography..

UHCUltra High Contrast, UHC is also a broadband filter with an obvious effect on blocking city harmful lights. OPTOLONG UHC filter astounding high light transmission brings better views of deep-sky-object even to small telescopes. Another major advantage of our UCH filter is the high optical quality of the filter glass. you will quickly notice the same needle-sharp stars which you are familiar with from your astronomical instrument without any filter.

High cutoff the light damage and other stray light interference. Using Germany imported glass, using double-sided polishing processingcarton PP environmentally friendly materials, simple and beautiful. For the emission line 656nm transmittance of 85 or morelined with double-layer EVA damping cotton. The narrow band filter,even in areas where light pollution is heavy,and the full moon the moon's largest and brightest is the same,very narrow bandwidth, which reduces the interference of the external environment,but the haze and cloudy the weather is not possible. Precision CNC integrated moldingmulti layers anti reflection coatingframe with high-quality aluminum alloy materialanodized extinction treatment.