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Baader Planetarium Red 610nm Long-Pass Filter, 1.25" Eyepiece
SKU: AA2458307 MFR: FCFR-1
$60.00
Key Features
- Enhance your views with this Baader Planetarium red filter, perfect for planetary detail!
- Boost image contrast using this 1.25" eyepiece filter, ideal for lunar & planetary viewing.
- Minimize light pollution with this red long-pass filter, revealing faint celestial objects.
- Threaded for standard 1.25" eyepieces, this filter easily integrates into your telescope setup.
- Experience superior durability with this Baader filter's robust, high-quality construction.
- Maximize filter transmission at 610nm, bringing out stunning details on Mars and Jupiter.
Special Order?Estimated to Ship: 12/19/2025
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About Baader Planetarium FCFR-1
Why settle for less when you can experience the brilliance of the cosmos with the Baader Planetarium FCFR-1 Red Long-Pass Filter This high-quality optical accessory, designed specifically for 1.25" eyepieces, boasts a bandpass at 610nm, making it an ideal tool for capturing vibrant, colorful images of celestial bodies such as planetary nebulae and star-forming regions.
With an impressive 98% transmission efficiency, this filter enhances the intricate details of planetary bodies and works seamlessly with solar filters. Its unique design allows it to be placed anywhere in the optical path without introducing astigmatism or other defects, ensuring dazzling, clear images every time.
The filter's 2mm thick glass and fine optical polish allow it to be inserted into the optical path without degrading the image quality, even when used in front of a binocular viewer. The substrates are free of striae and plane-parallel polished to within 30 seconds of arc, eliminating any double images or ghosting due to wedge errors in the glass.
The filter cell features the largest clear aperture of any telescope filter on the market, ensuring complete freedom from vignetting at any focal length. The front "crown" incorporates milled notches for easy handling and threading in the dark.
All surfaces of this radiant filter are treated with a 7-layer Multi-Coating, resulting in a mere 0.25% residual reflection. This is the most elaborate coating ever applied onto amateur color filters, ensuring a filter free of any false reflections under any incident angle of light.
Light is the most crucial element for all planetary observation. The 7-layer MC-coatings not only provide a brighter image, but they also prevent the softening effect of scattered light, which can obscure the subtlest planetary surface details. With painstaking attention to coatings and perfect optical figuring, the image contrast through these premium filters is rock-solid, making your astrophotography experience truly unforgettable.
Baader Planetarium FCFR-1 Features
- Freedom from ghost images, even when stacked
- Striae-free substrates are polished parallel to within 30 seconds of arc to avoid wedge errors
- Finest 7-layer hard multi-coatings on both faces feature 0.25% residual reflections
- Extremely high transmission results in maximum contrast and isolation of planetary details, even with smaller telescopes
- Efficiency of the long-pass filter (Red) peaks at 98%
- Carefully designed spectral characteristics. Filters may be stacked without image degradation or ghosting, in order to provide even narrower passbands, or combine with any of the other Baader filters for interesting possibilities
- No reduction in sharpness, even at high magnifications or when using the filter far ahead of the focal plane
- With the 2" size, only one filter is needed for binoviewing. Only Baader colored filters have the optical quality necessary for use this far ahead of the focal plane
Warranty Information
This product has a limited warranty of 24 months for parts and 24 months for labor.