Alpine Astronomical Baader Yellow Colored Bandpass Eyepiece Filter (2")

BH #ALFCFY2 • MFR #FCFY-2
Alpine Astronomical
Alpine Astronomical Baader Yellow Colored Bandpass Eyepiece Filter (2")
Key Features
  • Planetary Viewing/Imaging Filter
  • 495nm Wavelength Bandpass
  • 2" Eyepiece Threads
  • 7-Layer Anti-Reflection Multi-Coated
Centered on the 495nm wavelength, the Alpine Astronomical Baader Yellow Colored Bandpass Eyepiece Filter can be used by itself or stacked with other filters to enhance your observations when viewing or imaging Jupiter or Mars. The optical glass filter is planeoptically polished and treated with seven-layer Phantom Group anti-reflection multi-coatings to improve contrast and clarity while eliminating reflections, scattering, or image dimming. Holding the filter is an black anodized aluminum frame made to fit standard 2" eyepieces and other accessories such as diagonals and Barlows.
Special Order
Expected availability: 7-14 business days
$64.00

Alpine Astronomical Baader Yellow Colored Bandpass Eyepiece Filter (2")

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Alpine Astronomical FCFY-2 Overview

Centered on the 495nm wavelength, the Alpine Astronomical Baader Yellow Colored Bandpass Eyepiece Filter can be used by itself or stacked with other filters to enhance your observations when viewing or imaging Jupiter or Mars. The optical glass filter is planeoptically polished and treated with seven-layer Phantom Group anti-reflection multi-coatings to improve contrast and clarity while eliminating reflections, scattering, or image dimming. Holding the filter is an black anodized aluminum frame made to fit standard 2" eyepieces and other accessories such as diagonals and Barlows.

Use

  • Suppresses the secondary blue spectrum when using achromatic and half-apochromatic refractors, increasing image sharpness
  • For visual and photographic planetary observations
  • Enhances contrast between the belts on Jupiter
  • Increases contrast of the lunar and Martian surface
  • 98% average transmission bandpass throughput

Alpine Astronomical FCFY-2 Specs

Size2"
Filter FactorYellow, 495nm wavelength
Multi-CoatedYes
RotatingNo
ApplicationLunar and planetary viewing and imaging
ConstructionGlass filter, aluminum frame
Front Filter Thread Size 2"
Weight2.3 oz / 66.0 g
Packaging Info
Package Weight0.155 lb
Box Dimensions (LxWxH)3.1 x 2.9 x 0.95"
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