Baader Planetarium Hyperion 8mm-24mm Clickstop Zoom Telescope Eyepiece - HYP-ZOOM
Baader 495 nm Longpass Filter - 2" Yellow
Freedom from Ghost images, even when stacked. The substrates of this Baader 2" filter are free of striae and polished parallel to 30 seconds in order to avoid wedge errors. It features the finest hard 7-layer multi-coatings on each face with 0.25% residual reflections. Baader filters are special in this regard as all competing filters are without anti-reflection multi-coatings. Futhermore, the coatings differ for each filter so that they match the coating performance to each color's filter curve to increase transmission while decreasing 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. In order to deliver even narrower passbands, these color filters from Baader can be stacked without ghosting or image degradation. Additionally, they can combine with other Baader filters to enable many interesting contingencies.
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).
Only ships in contiguous USA.
- Baader Planetarium 495 nm Longpass Yellow Eyepiece Filter - 2"
Dimensions & Specifications
- Filter Size: 2"
- Filter Type: Planetary Color
- Filter Shape: Round
- Mounted/Unmounted: Mounted
- Wratten Number or Equivalent: #12 Yellow
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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 firstname.lastname@example.org.
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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