Baader Planetarium Yellow 495nm Long-Pass Filter, 1.25" Eyepiece #FCFY-1

Description: Baader Planetarium Yellow 495nm Long-Pass Filter, 1.25" EyepieceSKU: AA2458301Mfr. Part: FCFY-1 DescriptionThe Baader Planetarium FCFY-1 Yellow 495 nm Long-Pass Filter has 98% transmission efficiency and is superb for bright planet and cometary details. A fine optical polish and 2 mm thick glass allow this filter to be inserted anywhere into the optical path without introducing astigmatism or other defects. For instance, they can be used in front of a binocular viewer without degrading the image in any way. Substrates are free of striae and plane-parallel polished to within 30 seconds of arc. This eliminates 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 for complete freedom from vignetting at any focal length. The front "crown" incorporates milled notches, which makes handling and threading the filter an easy operation in the dark. All surfaces are treated with a 7-layer multi-coating, featuring a mere 0.25% residual reflection. It is the most elaborate coating ever applied onto amateur color filters, resulting in a filter free of any false reflections under any incident angle of light. Light is the hottest commodity for all planetary observation. Especially during high magnification work, whether you have enough light or not is the deciding factor for the recognition of the subtlest planetary surface detail, much more important than a horde of different filters of mediocre execution. The 7-layer MC-coatings not only provide a brighter image, they prevent the softening effect of scattered light. Scattered light kills exactly those subtle features in planetary detail that you are longing to see. Painstaking attention to coatings and perfect optical figuring are simple reasons why the image contrast through these premium filters is so rock-solid.FeaturesFreedom from ghost images, even when stackedThe Baader Planetarium Yellow Long-Pass Filter has 98% transmission efficiency and is superb for bright planet and cometary detailsCan be placed anywhere in the optical path without introducing astigmatism or other defectsStriae-free substrates are polished parallel to within 30 seconds of arc to avoid wedge errorsFinest 7-layer hard multi-coatings on both faces feature 0.25% residual reflectionsExtremely high transmission results in maximum contrast and isolation of planetary details, even with smaller telescopesEfficiency of the long-pass filter (Yellow) 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 possibilitiesNo reduction in sharpness, even at high magnifications or when using the filter far ahead of the focal planeWith 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 planeSpecificationsGlass Thickness2mm / 0.07"Eyepiece1.25" / 31.75mm WHO WE ARE Adorama is one of the nation's largest Photographic retail and mail order suppliers. For over 35 years we have been serving professionals as well as amateurs in the photographic, video, digital imaging and telescope fields. We offer the best combination of quality services, vast selection, knowledgeable staff, and competitive pricing. 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Hours of operationMon-Thurs: 9:00am - 6:00pm Friday: 9:00am - 1:00pm : 12pt;"> 9:00am - 6:00pm Friday: 9:00am - 1:00pm

Price: 53 USD

Location: Elizabeth, New Jersey

End Time: 2024-11-10T09:27:40.000Z

Shipping Cost: N/A USD