Baader IR-Pass Filter 2" (685 nm)

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Part Number: FIRP-2

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Baader IR-Pass Filer HWB 685nm
Reduces the effect of seeing resulting in a much sharper image.
Tip for use: Ideal for imaging and used for the luminosity channel.
The effect of use: The normal spectral bandwidth is 400-700nm. This filter starts at 670nm in the deep red, just in the visual range so it can be focussed correctly. At this long-wavelength spectral range the atmospheric air turbulence (seeing) has much lower impact on the sharpness. Dark structures on Mars, Jupiter the Moon and the Sun are thereby rendered much sharper. The luminosity can then be combined with RGB creating a very sharp LRGB image.
Highly recommended for any planetary imager.
Reflex free anti-reflective and optically polished.

ANUFACTURER	Baader Planetarium
SKU (#)	2458386
EAN CODE	4047825009401
WEIGHT (KG)	0.066
TRANSMISSION RANGE	> 685 nm
FILTER THICKNESS (WITHOUT CELL)	2 mm
AR-COATING	dielectrically coated, planeoptically polished
FILTER SIZE	2 inch
FILTER USAGE	Contrast Enhancement, IR-Pass, Planetary
FILTER MOUNTED	Mounted (LPFC 6mm)
TYPE OF FILTER	Bandpass
SINGLE OR SET?	Single Filter
FILTER SHAPE	round

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