Baader Planetarium Contrast Booster Filter for 1.25" Eyepieces

From the renowned Baader Planetarium, the Contrast Booster Filter for 1.25" Eyepieces is an innovative and high-quality optical accessory that goes beyond the capabilities of a standard minus-violet filter. Drawing from the acclaimed Baader Moon & Skyglow filter, this Contrast Booster Filter takes image contrast enhancement and skyglow reduction to new heights, providing an unparalleled viewing experience for astronomy enthusiasts.

This effective filter significantly enhances planetary and lunar contrasts, while also eliminating the blue de-focused haze often found in achromatic refractors. Say goodbye to the distracting blue halo and obscuring haze that can compromise resolution and contrast. With this filter, subtle contrasts and colors are amplified, allowing your telescope to display its full resolution capabilities.

The Contrast Booster Filter is crafted with a unique proprietary blend of Neodymium glass, combined with a meticulously designed 23-layer dielectric long-pass blocker on one face, and a 7-layer ultra-low anti-reflection coating on the other. This innovative design aggressively filters out defocused blue wavelengths, imparting a light yellow tint to objects, significantly less than a typical yellow filter.

The special coatings allow for over 95% transmission across key portions of the visible spectrum, including H-Alpha. This results in a filter that maintains the colors and color contrasts in challenging subjects like Jupiter, without causing excessive image dimming. The ruddy red hues of cloud bands become more striking in contrast, and the Great Red Spot on Jupiter becomes easier to observe. Planets and lunar landscapes are set against a jet black sky, providing a breathtaking viewing experience.

The Contrast Booster Filter is an essential tool for solar observing when used in conjunction with Baader Astro Solar. It's also an excellent filter for observing Mars, as all telescopes, including reflectors and apochromats, benefit from the RGB filtration plus blue blocking. When paired with the Baader UV-IR-Cut Filter, the Contrast Booster becomes the ideal filter set for digital imaging.

The filter's true 1/4 wave fine optically polished surfaces ensure the sharpness and contrast of the image. The base substrate is a special custom blend of Neodymium-doped glass, designed for specific transmission characteristics and exclusively made for Baader Planetarium. The Contrast Booster Filter not only offers unique spectral characteristics but also features Baader's hallmark optical and mechanical features, ensuring the best possible image sharpness, contrast, and real-world durability.