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Baader 685nm IR-Pass Filter

£69.00
SKU 2458385

Availability: Immediate Dispatch

  • Baader IR-Pass Filter HWB 685nm
  • Reduces the effect of seeing resulting in a much sharper image
  • Ideal for imaging and used for the luminosity channel
  • Highly recommended for any planetary imager
  • Reflex free anti-reflective and optically polished
Description

This Baader IR-Pass filter reduces the effect of seeing, resulting in a much sharper image. The filter is ideal for imaging and used for the luminosity channel.

The effect of this filter's 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 focused 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!

Specifications
MANUFACTURER Baader Planetarium
SKU (#) 2458385/86
WEIGHT (KG) ~0.07
TRANSMISSION RANGE > 685 nm
FILTER THICKNESS (WITHOUT CELL) 2 mm
AR-COATING dielectrically coated, planeoptically polished
FILTER SIZE 1 25 inch / 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