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Home > Filters > Filters for CCD & DSLR imaging > Baader IR - PassFilter (685 nm) (optically polished)

Printable version

Baader IR - PassFilter (685 nm) (optically polished)

Weight 0.00 gm

Price: £47.00
Incl. VAT 20% ( £7.83 )

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Product code: 2458385-

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Used for extremely high resolution planetary imaging. Allows deep red light to pass at 670nm and extends well into the infrared. This long wave light can be used in IR-LRGB imaging to produce a sharper luminance image for the best planetary contrast as atmospheric seeing and distortion is much reduced at these longer IR wavelengths. The atmosphere bends IR light less then blue light. Luckily CMOS and CCD cameras are very sensitive to these longer wavelengths! Therefore RGB planetary images taken with IR as the luminance channel have produced some of the finest Mars pictures during the last opposition with far higher contrast and surface detail than standard LRGB images. The picture opposite which was taken with a webcam and IR-Pass filter. Contrast on Jupiter and other planets is also visibly enhanced. In order to be able to find focus with your eyes the light transmission begins at the still visible 685nm, offering a dark red image for focusing and adjustments