Baader Planetarium 1.25" Green Eyepiece Filter - 500 nm Bandpass - FCFG-1

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  • Eliminates reflections, ghosting, and stray light, while delivering peak brightness
  • This Baader 1.25" Green Filter is fine optical plane parallel polished to inside 30 seconds of arc
  • High quality 500 nm bandpass filter with color comparable to the Wratten #58 filter
  • Contains professional 7-layer multicoatings for an image free of false reflections
  • Stackable 1.25" filter cell with male as well as female threads to enable you to combine filters to suit your needs
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  • Description

    Baader Green 500 nm Bandpass Eyepiece Filter - 1.25"

    Freedom from Ghost images, even when stacked. Striae-free substrates are polished parallel to 30 seconds to prevent wedge errors. Both faces feature the finest 7-layer hard multi-coatings with 0.25% residual reflections. No other colored filter on the market incorporates anti-reflection multi-coatings. Furthermore, these coatings vary depending on the filter in order to couple the coating performance with the filter curve of each color. This maximizes transmission while minimizing reflections.

    Extremely High Transmissions provide maximum contrast to bring out planetary details, even when smaller telescopes are used. The three Baader longpass filters (Red, Orange, and Yellow) have peak efficiencies of 98%, while the three Baader bandpass filters (Green, Blue, and Dark Blue) top out at 70%.

    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 (ie, digital imaging, or in front of a diagonal or binoviewer). 



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    Shipping Restrictions

    Only ships in contiguous USA.

    What's Included

    • Baader Planetarium 1.25" Green Eyepiece Filter - 500nm Bandpass

  • Dimensions & Specifications

    • Filter Size: 1.25"
    • Filter Type: Planetary Color
    • Filter Shape: Round
    • Mounted/Unmounted: Mounted
    • Wratten Number or Equivalent: #58 Green

  • Product Guarantee

    We stand behind all the products we sell, and your satisfaction is our top priority. If you're not satisfied with the quality of your purchase, simply send the item back to us in its original packaging within 30 days of its delivery.

    Manufacturer Warranty

    This product has a 2 year manufacturer's warranty against defects is provided. If you have specific questions about this product's warranty please contact Alpine Astronomical's Customer Service department by email at service@alpineastro.com.

    Return & Exchange Policy

    At our site, returns are easy! You may return new, unused, and resalable items for a refund or exchange. Simply ensure that the item is returned in its original product packaging within 30 days of delivery.

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