Baader IR-Pass-Filter 1.25 Inch (HWB 685nm)
Product.Nr.:
BP#2458385
Manufacturer: Baader Planetarium
90,00 EUR
incl. 19 % VAT
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- delivery time : 1-2 Tage
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product description
- 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.
- Planoptically polished (1/4 Lambda)
- IR-Phantom Group Coated
- IR-matched AR-coating
- Highest IR-Transmission
- Non aging - Sealed coating edges
- NO halos & NO reflections!
- LPFC = Low Profile Filter Cell (effective height 6mm)
- Baader-filterbox, combinable
Legend:
- 1¼" = Filterthread M28.5mm (glass thickness: 2mm)
- 2" = Filterthread M48mm (glass thickness: 2mm)
- 36mm, 38mm (glass thickness: each 2mm), 50.4mm, 50.8mm (glass thickness: 3mm) = round, unmounted
- 50x50mm, 65x65mm (glass thickness: each 3mm) = square, unmounted
- nm = Nanometer (bandwidth/FWHM)
Note:
The preferred oriention of the filter is to have the highest reflectivity side facing skyward.
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