Baader Planetarium Orange 570nm Long-Pass Filter, 1.25" Eyepiece

How can you elevate your astrophotography and planetary observation to new heights The Baader Planetarium FCFO-1 Orange Long-Pass Filter is your answer. Engineered with precision for 1.25" eyepieces, this filter boasts a selective bandpass at 570 nm, ensuring that only the desired wavelengths illuminate your celestial subjects. With an impressive 98% transmission efficiency, it significantly enhances planetary details, making it an essential tool for both amateur and professional astronomers.

Crafted from 2 mm thick glass with a fine optical polish, the Baader Orange Long-Pass Filter guarantees a pristine viewing experience. It can be seamlessly integrated into the optical path of your telescope setup without introducing astigmatism or other optical defects. Whether placed in front of a binocular viewer or elsewhere, it maintains the integrity of the image, ensuring that every observation is as clear and sharp as possible.

The substrates of this filter are meticulously free of striae and are plane-parallel polished to within 30 seconds of arc. This attention to detail eliminates the frustration of double images or ghosting that can result from wedge errors in lesser quality glass. The filter cell itself is designed to offer the largest clear aperture available on the market, providing complete freedom from vignetting across any focal length.

Handling and threading the filter, even in the darkest of environments, is made effortless thanks to the milled notches on the front "crown" of the filter cell. Moreover, each surface of the filter is treated with a state-of-the-art 7-layer Multi-Coating, which boasts a minimal residual reflection of only 0.25%. This elaborate coating is the most advanced ever applied to amateur color filters, ensuring that your observations are free from any false reflections, regardless of the incident angle of light.

In the realm of planetary observation, where light is a precious commodity, the Baader Orange Long-Pass Filter excels. It not only provides a brighter image during high magnification work but also combats the softening effect of scattered light. Scattered light is the nemesis of subtle planetary detail, and the premium 7-layer MC-coatings of this filter effectively prevent it, allowing you to discern even the most delicate features on planetary surfaces.

The Baader Planetarium FCFO-1 Orange Long-Pass Filter is a testament to the brand's commitment to quality and performance. It stands as a top choice for discerning astronomers who demand the best in optical enhancement, ensuring that every celestial observation is vivid, vibrant, and full of contrast.