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Optolong IR Pass 685nm Filter

$81.75 $40.88

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The Optolong IR Pass 685nm filter isused to block wavelengths below 670nm and is designedfor IR-LRGB imaging in order to produce a sharper luminance image for the best planetary contrast. This is because atmospheric seeing and distortion is much reduced at longer IR wavelengths.

CCDand CMOSsensors arecapable of detecting light in the 350-1100nm range including infrared wavelengths. Taking RGB planetary images with IR as the luminance channel will haveimprovedcontrast and better surface detail than LRGB images.

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