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Baader Planetarium Fringe-Killer Filter, 1.25" Eyepiece
SKU: AA2458370 MFR: FFK-1
$108.00
Key Features
- Enhance your views with this Baader Planetarium Fringe-Killer Filter, designed for 1.25" eyepieces.
- Reduce chromatic aberration and unwanted fringing for clearer astronomical observations; get yours today!
- This telescope filter boosts contrast on planets like Mars and Jupiter, revealing finer details in the night sky.
- Experience superior light pollution reduction, making faint deep-sky objects more visible from urban areas.
- Enjoy high transmission rates across the visible spectrum, ensuring bright and vivid images through your telescope.
- Built for durability, this 1.25" filter protects your valuable eyepieces while optimizing viewing quality.
Special Order?Estimated to Ship: 09/13/2025
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About Baader Planetarium FFK-1
FEATURED REVIEWS
You need this filter!
If you have an acro refractor and you want to crank the magnification up you need this filter. it's pricey but well worth it.
Are you seeking a solution to enhance your astronomical viewing experience The Baader Planetarium FFK-1 Fringe-Killer Filter, a high-quality, durable, and innovative product, is designed to provide the brightest image among all color-correcting filters available today. This effective filter is engineered to minimize unwanted blue fringing, similar to a Minus-Violet-Filter, while maintaining a pleasing color balance.
This user-friendly filter employs modern DWDM plasma-assisted coating technology, which allows almost a hundred coating layers to be accumulated onto a planoptically polished substrate. This intricate process ensures the optical figure remains undisturbed, resulting in a clearer and sharper image.
The Fringe-Killer Filter is an essential tool for small refractors to achieve the magnification as advertised. Its performance rivals that of the most expensive color correcting lens systems, thanks to its complex coating, which requires nearly 50 layers per side, using the latest DWDM Plasma assisted coating process.
The Fringe Killer is an ideal companion to the Baader Contrast Booster, an aggressive filter designed to deliver maximum sharpness and contrast from an achromat. The result is a complete removal of the violet haze, albeit with a slightly dimmer and yellowier image. The Contrast Booster also incorporates additional RGB filtration for further enhancing color contrasts.
For digital imagers, including CCD, DigiCam, and webcam users, the Fringe Killer is the ultimate mate for their achromatic refractor. Its high transmission and fringe reduction capabilities are ideal for both planetary and deep sky imaging.
Baader has also integrated their renowned UV/IR Cut coatings as part of the Fringe Killer formula. These coatings maintain very high transmission, with well-placed sharp cutoffs in the IR and UV, making the Fringe-Killer Filter a must-have tool for any serious astronomer or photography enthusiast.
Baader Planetarium FFK-1 Features
- Built-in Infrared Blocker (656 nm to 1150 nm) - great for CCD work or projection photography of the Moon and planets with digital cameras
- The Baader Planetarium Fringe-Killer Filter is fully threaded and designed for 1.25" oculars
- The Baader Planetarium Fringe-Killer Filter removes unwanted blue and purple image fringing while still retaining a pleasing color balance
- Plasma-assisted coating technology allows application of 50 coating layers on the glass without destroying the optical figure
- Offering the brightest image of all color-correcting devices in the industry, makes the Fringe-Killer a must for even the smallest of refracting (lens type) telescopes
- Removes blue fringing as well as RED fringing above 656 nm
- Forms a "plateau" of eff. 50% transmission in the blue spectral region from 450 nm to 480 nm, which is much more complex to produce than even the narrowest of all Nebula Filters
- Retains the highest light transmission of all known color correcting devices - be it filters or lenses - in all important deep sky wavelengths from 486/501 up to 656 nm
- Built-in Infrared Blocker, ranging from 656 to 1150 nm, makes it the perfect tool for CCD work, as well as afocal projection photography with digital cameras for the Moon and planets
- The most subtle of color variations remain visible in planetary surface detail, due to the excellent color balance
- Combine with the Baader Red 610 nm color filter to receive an ultra narrow (-70 nm) wide H-Alpha passband filter at an amazing 95% peak transmission
- Combine with the 1.25" Skyglow Filter for breathtaking contrast on lunar and planetary surface detail
- Planoptically polished to achieve perfect sharpness, even when mounted way in front of a binocular viewer, or during afocal projection (digital imaging)
- No deterioration of resolution with magnification at 300 times or more, something that would not happen with the usual "flame polished" (raw polished) glass, commonly used for a wide variety of filters
- Plasma-assisted, hardest, scratch proof and water impermeable dielectric coatings of almost 50 coating layers on either side, most carefully designed to extend equal tension onto either side of the substrate in order to retain the highest quality optical figure
Warranty Information
This product has a limited warranty of 24 months for parts and 24 months for labor.