Baader

Baader F/2 HighspeedFilter Set 2 " H-ALPHA / OIII / SIII 2459400

Code: 2459400

Baader F/2 HighspeedFilter Set 2 " H-ALPHA / OIII / SIII 2459400


  • f/2 Highspeed Filterset consisting of 3 Filter: H-alpha, O III and S II. Highspeed Narrowband Filter are designed especially for the delicate requirements of extremely fast astrograph optics, in particular Hyperstar and RASA
  • Conventional narrowband filters cause a heavy loss in transmission due to the strong CWL-shift. In extreme cases the CWL even does shift out of the FWHM (CWL= Center-wavelength / FWHM= full width half maximum). Therefore these filters have a CWL-preshift which matches f/2 to f/3 perfectly.
  • The FWHM is optimized. In spite of the typical line broadening with such fast optical trains they are able to deliver maximum contrast.
  • For the first time these filters allow to use fast optics really effectively with high contrast emission nebulae imaging. Using these filters between f/1,8 and f/3,5 shows a dramatic improvement compared to any regular set of narrowband-filters.

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    • f/2 Highspeed Filterset consisting of 3 Filter: H-alpha, O III and S II. Highspeed Narrowband Filter are designed especially for the delicate requirements of extremely fast astrograph optics, in particular Hyperstar and RASA
    • Conventional narrowband filters cause a heavy loss in transmission due to the strong CWL-shift. In extreme cases the CWL even does shift out of the FWHM (CWL= Center-wavelength / FWHM= full width half maximum). Therefore these filters have a CWL-preshift which matches f/2 to f/3 perfectly.
    • The FWHM is optimized. In spite of the typical line broadening with such fast optical trains they are able to deliver maximum contrast.
    • For the first time these filters allow to use fast optics really effectively with high contrast emission nebulae imaging. Using these filters between f/1,8 and f/3,5 shows a dramatic improvement compared to any regular set of narrowband-filters.
  • Specifications:

    Transmission Range: multiple bands (see spectral image)
    Filter Thickness (Without Cell): 2 mm
    CWL (Central Wavelength): 656,3 nm;502 nm;673 nm
    AR-Coating: dielectrically coated, planeoptically polished
    Filter Size: 2 inch
    Filter Usage: CCD, Deep Sky, f/2 Highspeed, H-alpha, O-III, S-II
    Filter Mounted: Mounted (LPFC 6mm)
    Type Of Filter: Narrowband
    Single Or Set?: Filter-Set
    Filter Shape: round

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