Lunático Astronomía

Baader IR-Pass Filter (685 nm)



Baader IR-Pass Filter (685 nm)

Technical Data:

  • Baader IR-Pass Filer HWB 685nm
  • Reduces the effect of seeing results 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 a 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.
FILTER SIZE 1 25 inch 2 inch
MANUFACTURER Baader Planetarium Baader Planetarium
SKU (#) 2458385 2458386
EAN CODE 4047825009418 4047825009401
WEIGHT (KG) 0.059 0.066
TRANSMISSION RANGE > 685 nm > 685 nm
AR-COATING dielectrically coated, planeoptically polished dielectrically coated, planeoptically polished
FILTER USAGE Contrast Enhancement, IR-Pass, Planetary Contrast Enhancement, IR-Pass, Planetary
FILTER MOUNTED Mounted (LPFC 6mm) Mounted (LPFC 6mm)
TYPE OF FILTER Narrowband Narrowband
SINGLE OR SET? Single Filter Single Filter
FILTER SHAPE round round


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Filter thread

1,25", 2"

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